Other Ending Letters

Word Lengths Starting With S

All 1349 Matching Words

sabbatarianismAlternative letter-case form of Sabbatarianism.sabbatism(obsolete) A period of rest, a sabbatical rest, a time of respite after death.saccharibacteriumAny bacterium of the candidate phylum Saccharibacteriasaccharometabolism(biochemistry) the metabolism of sugarssaccharum(archaic) Invert sugar.sacciformResembling a pouchsaccolabiumAny plant of the genus Saccolabium.saccopharyngiformBelonging to the order Saccopharyngiformes.sacculiformShaped like a little sac.sacellumA small chapel, as a monument within a church.sacerdotalismThe spirit of the priesthood; devotion to priestly interests; priestcraft.sacerdotismSynonym of sacerdotalism.sachemA chief of one or several Native American tribe(s), especially of the Algonquians; a sagamore.sachemdomThe government or jurisdiction of a sachem.sacramentalism(theology) The belief that observance of the sacraments is necessary for salvation, or belief in their efficacy.sacramentarianism(theology) sacramentarian beliefssacramentum(historical) An Ancient Roman oath or vow that rendered the swearer "given to the gods", in the negative sense if he violated it.sacrarium(anatomy) The complex sacrum of any bird.sacrificialismA policy or approach based on sacrifice.sacrum(anatomy) A large triangular bone at the base of the spine, located between the two ilia (wings of the pelvis) and formed from vertebrae that fuse in adulthood.sadcom(film) A sad comedy.saddlebumSynonym of saddle tramp.sadismAchievement of sexual gratification by inflicting pain or humiliation on others, or watching pain or humiliation inflicted on others.sadomasochismThe practices of sadism and masochism collectively, usually in reference to consensual practices within the BDSM community.sadopopulism(politics) A political strategy or act in which a leader appeals to people by harming them but convincing them that people they hate are at fault or suffering worse harm.saeculumAn approximately 85-year cycle in Strauss-Howe generational theory, a highly controversial sociological theory that postulates that zeitgeist and popular cultural values exist along recurring cycles.saeptumObsolete spelling of septum.saferoomAlternative form of safe room.safetyismAn obsession with keeping people safe from perceived threats.sagapenumA yellow to brown bitter gum that derives from plants of the genus Ferula.sagittiform(biology) Having the form of an arrowhead, but lacking flaring lobes on the base.sagopalmAlternative spelling of sago palm.sagum(historical) A cloak, worn in ancient times by the Gauls, early Germans, and Roman soldiers, made of a rectangular piece of (usually red) coarse cloth and fastened on the right shoulder.sahibdomThe condition of being a person of rank, especially a British person, in colonial India.sailroomA room on a ship for the storage of sails.saimAlternative form of seam (“lard”).saintismThe character or quality of saints.salaamA respectful ceremonial greeting used mostly by Muslims.salamAlternative spelling of salaam.salamandriformHaving the shape of a salamander.saleroomA room in which items for sale are displayed; a showroomsalesroom(business) The room where sales are madesalicetumA group of willow trees.salicylismA toxic condition induced by excessive intake of salicylates, marked by ringing in the ears, nausea, and vomiting.saliniformHaving the form or appearance of salt or of a salt.salinilactam(organic chemistry) A macrolactam present in SalinisporasalivariumA small pocket, inside the oral cavity of an insect, which contains the opening of the salivary ductsalmObsolete form of psalm.salmoniformAny fish of the order SalmoniformessalpiformResembling a salp.salpingogram(medicine) An X-ray image taken during salpingographysaltationism(evolutionary theory) The belief that evolution operates by the sudden development of new species or biological features from one generation to the next.salvationismA belief system that places the responsibility for the fulfillment of humanity outside itself, usually in the hands of a deity.salverformShaped like a salver.sam(transitive, UK dialectal) To assemble.samariform(botany) Resembling a samara, or winged seed vessel.samariumA chemical element (symbol Sm) with an atomic number of 62, a moderately hard silvery metal that slowly oxidizes in air. Applications in human affairs include magnets with high performance at high temperatures, which are important in military equipment.samoomArchaic form of simoom.sanatariumAlternative spelling or misspelling of sanitarium or sanatorium.sanatoriumAn institution that treats chronic diseases, and provides supervised recuperation and convalescence.sanctionismA policy of imposing sanctions.sanctumA place set apart, as with a sanctum sanctorum; a sacred or private place; a private retreat or workroom.sandaliform(botany) shaped like a sandal or slipper.sandhyavandanam(Hinduism) A religious ritual accompanied by recitation from the Vedas and including an offering of water to the Sun, supposed to be performed three times a day.sandstormA strong wind carrying clouds of sand and dust through the air.sandworm(British) A lugworm, of species Arenicola marina.sanfetrinemA beta-lactam antibiotic.sanguinismA sanguine attitude.sanhedrimAlternative spelling of Sanhedrin.sanismDiscrimination and oppression against people who have, or who are labelled or perceived as having, a mental illness.sanitarianism(dated) The promotion of public health.sanitarium(US) Alternative form of sanatorium.sanitoriumAlternative spelling of sanatorium.sansculottismAlternative form of sans-culottism.santalum(botany) Any of the genus Santalum of trees with entire opposite leaves and small apetalous flowers.santimA subunit of Latvian currency. 100 santims equal a lat.santorum(neologism, sex, slang) A frothy mixture of lubricant and fecal matter as an occasional byproduct of anal sex.sapphismLesbianism; female homosexuality.saprobismThe condition of being saprobicsaprophytismThe condition of being saprophyticsaprotrophismThe condition of being saprotrophicsarcasm(countable) An individual act of the above.sarcinaeformResembling the Sarcina genus of bacteria.sarcoderm(botany) A fleshy covering of a seed, lying between the external and internal integuments.sarcoplasm(anatomy) The interfibrillar cytoplasm of striated musclesarcoseptum(archaic, zoology) A mesentery of an anthozoan.sarcosporidiumA protozoan parasite of the genus Sarcocystis.sardismAlternative letter-case form of Sardism.sardonicismThe quality of being sardonicsardoodledom(uncommon) Well-made works of drama that have trivial, insignificant, or melodramatic plots.sargassumAny of many brown algae of the genus Sargassum; gulfweedsargramostim(pharmacology) A recombinant granulocyte-macrophage colony-stimulating factor (GM-CSF), produced in yeast, which functions as am immunostimulator, primarily used for myeloid reconstitution after bone marrow transplantation.saripidem(pharmacology) A sedative and anxiolytic drug in the imidazopyridine family.sarmentum(botany) Synonym of sarment.sarothrumAny of the stiff hairs on a bee that collect pollen.satanismAlternative letter-case form of Satanism.satcomAlternative form of satcoms (“satellite communications”).satellitism(virology) An obligate association between two virusessatellitium(astrology) A grouping of several planets in a sign.satem(Indo-European studies) Of or relating to a Proto-Indo-European language group that produced sibilants from a series of palatovelar stops.satirismA satirical approach or outlook.saturnism(medicine, dated) lead poisoningsatyrismAn extremely high or excessive libido in men or boys.saum(Islam) fasting; one of the five pillars of IslamsaurichthyiformAny extinct fish of the order Saurichthyiformessaurognathism(zoology) The peculiar arrangement of the palatal bones in the Saurognathae.savagedomA savage state or condition; savagery.savagismThe state of being savage; wildness; lack of civility.savantismThe condition of being a savant.savescum(intransitive, video games, often derogatory) To reload the last saved game whenever the player character dies or an unfavorable outcome has been encountered.savingramA piece of administrative correspondence that uses the informal and abbreviated language of a telegram, but sent by mail, which is less expensive.saviorismBelief in a savior.saviourismAlternative form of saviorism.sawm(Islam) Fasting, abstention, abstinence; the third of the five pillars of Islam.sbottom(physics) The squark that is the superpartner of a bottom quark.sbottomonium(physics) A hypothetical bound state of a superpartner of the bottom quark in some supersymmetric theories.scabellum(music, historical) A kind of percussion instrument played by the foot, used in dramatic performances.scalariformHaving the form of a ladderscalebeamThe lever or beam of a balance; the lever of a platform scale, to which the poise for weighing is applied.scalenum(obsolete, of a triangle) Scalene.scaleogramAlternative form of scalogram.scalewormAny polychaete worm of the family PolynoidaescallomIn willow basketmaking, a long tail piece allowing the willow rod to be attached to a base or lid.scalogram(signal processing) A visual representation of a wavelet transform, having axes for time, scale, and coefficient value, analogous to a spectrogramscalpelliformhaving the form of the blade of a scalpel or penknifescalpellum(zoology) One of the four filamentous organs in the proboscis of hemipterous insects.scalpriform(archaic) Shaped like a chisel.scalprumA toothed raspatory used in trephining and in removing carious bone.scamA fraudulent deal.scandalismThe focussing of attention on and publicizing information about scandals.scandiumA metallic chemical element, atomic number 21, obtained from some uranium ores; it is a transition element.scanogram(medicine) A radiograph produced by scanography.scapegoatismThe practice of holding somebody accountable as a scapegoat.scaphismA form of execution, among the ancient Persians, in which the victim is fastened into a hollow boat, force-fed and slathered in honey and milk and exposed to insects until the victim's death.scaphium(botany) The carina or keel of papilionaceous flowers.scaphocephalismSynonym of scaphocephaly.scaphotrapezium(anatomy) The scaphoid trapeziumscapiform(botany) Resembling a scape.scapulocoracoideumscapulocoracoid cartilagescarabaeiformAny beetle of the infraorder Scarabaeiformiascarlatiniform(medicine) resembling scarlatinascatologismA scatological term or phrase.scatterogramAlternative form of scattergram.scavengerismThe practice of scavenging.sceliphrolactam(organic chemistry) A polyene macrocyclic lactam present in an actinomycete associated with the mud dauber, Sceliphron caementariumscenesterismThe culture of scenesters; involvement in a lifestyle associated with a particular music scene.scepticism(British spelling) Alternative spelling of skepticism.sceptredom(rare) Reign; sovereign rule.sceuophylaciumThe repository of the sacred vessels in the Greek church.scharm(physics) Being or relating to the squark that is the superpartner of a charm quark.schediasm(archaic) cursory writing on a loose sheetscheelium(chemistry) (obsolete) tungsten (metal)scheliumAlternative form of scheelium.schellumAlternative form of schelm (“a villain or scoundrel”).schelm(Scotland) A villain or scoundrel.schematismA schematic representation; a layout schema.schermA temporary shelter made from branches.schismA split or separation within a group or organization, typically caused by discord.schismatismThe beliefs associated with a schism or breakaway faction.schistomulumThe immature form of a parasitic schistosomeschistosomulumA developmental stage of parasitic Schistosoma worms, existing after the cercaria penetrates the skin up until its migration to the liver.schizochromism(biology) The lack of a pigment in an organism, normally rendering it a lighter colour than normal.schizognathism(zoology) The state of a bird having a schizognathous palate.schizoidism(psychiatry) The condition of being schizoid.schizophreniform(pathology) Resembling or having some symptoms of schizophrenia.scholardomThe realm of scholars and scholarship.scholarism(obsolete, rare) Scholarship.scholasticism(philosophy) A tradition or school of philosophy, originating in the Middle Ages, that combines classical philosophy with Catholic theology.scholium(linguistics) A note added to a text as an explanation, criticism or commentary.schoolboydomSynonym of schoolboyhood.schoolboyismschoolboyish attitudes or behaviourschooldomThe realm or sphere of school.schoolgirldomSynonym of schoolgirlhood.schoolgirlismSchoolgirlish attitudes or behaviour.schoolmarm(US, slang) A female teacher, especially one seen to be old-fashioned and extremely severe and strict.schoolmasterismBehaviour that is characteristic of a schoolmaster.schoolroomA classroom, a room in a school used for instruction.schtoomAlternative form of shtum.schtumAlternative form of shtum.schussboom(skiing) To take part in fast downhill skiing.sciencismAlternative form of scientism.scientifilm(dated, fandom slang) A motion picture in the genre of science fiction.scientismThe belief that all truth is exclusively discovered through science.scientolism(dated) pseudosciencescintigram(medicine) An image of part of the body, obtained by measuring (by means of scintillation or a similar method) the radiation emitted by a radioactive tracer.sciolism(uncountable) The practice of expressing opinions on something which one knows only superficially or has little real understanding of; also, shallow or superficial knowledge; (countable) an instance of this.sciotheism(archaic) ancestor-worshipscismObsolete spelling of schism.scleroderm(pathology) Alternative form of scleroderma.sclerodermiformResembling scleroderma.scleromorphismThe condition of being scleromorphicscleroseptumAny of a group of calcareous rods of coral that project from the base of some cnidarian polypssclerotium(mycology) A compact mass of hardened mycelium stored with reserve food material that, in some higher fungi such as ergot, becomes detached and remains dormant until a favourable opportunity for growth occurs.scobiformResembling sawdust, filings or shavings.scoleciformShaped like a scolex.scolopendriformResembling the centipedes of the genus Scolopendra.scolopendrism(medicine) A condition caused by venom from the centipede genus Scolopendra.scolopidium(zoology) The most fundamental unit of a mechanoreceptor organ in insectsscombriform(zoology) Any fish of the order Scombriformesscomm(obsolete) A buffoon.scopiform(obsolete) Having the form of a broom.scopophilism(rare) Scopophilia.scopuliformscopiform on a smaller scalescoriformresembling scoriascorpaeniformAny fish of the former order Scorpaeniformes or of suborder Scorpaenoidei.scorpionismscorpion envenomationscoundreldomAll scoundrels or scoundrel-like activities, considered as a groupscoundrelismThe dishonest activities of a scoundrel.scoutdomThe realm or sphere of scouts.scram(intransitive, originally US, often imperative) To leave in a hurry; to go away.scrawm(UK, dialect, transitive) To tear or scratch.screamA loud vocalisation of many animals, especially in response to pain or fear.screendomThe world or sphere of films and television.screwballismThe nature or behavior of a screwball, being wacky or crazy.screwwormA larva of a blowfly of species Cochliomyia hominivorax (New World screwworm fly) or Chrysomya bezziana (Old World screwworm fly), of tribe Chrysomyini, parasitic in animals and sometimes humans, distinctive in eating living flesh of mammals, unlike most maggots, which eat only dead flesh.scribbledom(dated) The world or sphere of bad writing.scribedomThe world or sphere of scribes.scribismThe character and opinions of a Jewish scribe in the time of Jesus Christ.scrimA kind of light cotton or linen fabric, often woven in openwork patterns, used for curtains, etc,.scriptocentrismThe practice of regarding writing as the central part of language, and giving less importance to speech etc.scriptorium(countable) A room set aside for the copying, writing, or illuminating of manuscripts and records, especially such a room in a monastery.scripturalismThe quality or state of being scriptural; literal adherence to the Scriptures.scripturismAdherence to the Scriptures.scrotiformShaped like a scrotum, or two paired bags.scrotum(anatomy) The sac of skin and muscle that contains and protects the testicles in most placental mammals.scrumA tightly packed and disorderly crowd of people.scum(uncountable) A layer of impurities that accumulates at the surface of a liquid (especially molten metal or water).scutellumAny of several shield-shaped structures in insects, grasses etcscutiformHaving the shape of a shield; scutate.scutulumA yellow perifollicular saucer- or cup-shaped crust with a cheesy odour, composed of dense mats of mycelia and epithelial debris, often occurring on the scalp and characteristic of favus.scutum(zoology) A scute.scybalumA manually palpable lump of stool in the intestines, associated with constipation.scyphiform(botany) Shaped like a cup.seaborgiumA transuranic chemical element (symbol Sg) with atomic number 106.seabottomSynonym of seabed.seabreamAny of several species of marine fish of the families Sparidae or Bramidae found in shallow temperate and tropical waters around the world.seafoamA foam created by the agitation of seawater.seam(sewing) A folded-back and stitched piece of fabric; especially, the stitching that joins two or more pieces of fabric.seaquariumAn oceanarium.seastormA thunderstorm, waterspout, tropical storm, or other storm over an ocean.seatworm(UK, Australia, India) Strongyloides stercoralisseawormAlternative form of sea worm.sebum(physiology) A thick oily substance, secreted by the sebaceous glands of the skin, that consists of fat, keratin and cellular debris.secalotricumA hybrid of wheat and rye, similar to triticale but using rye as the cytoplasm donor.secessionalismSynonym of secessionism.secessiondom(historical) The realm or sphere of secession in the United States.secessionismThe doctrine or policy of secession.seclusionismA policy of seclusion.secohmThe practical unit of electrical self-induction; the henry.secretumA special seal used for private correspondence.sectarianismRigid adherence to a particular sect, denomination, ideology, or party.sectarism(obsolete) sectarianismsectionalismPromoting the good of one division, department or subgroup over that of the whole.sectismDevotion to a sect.secularismNeutrality towards all religions.seculumAlternative form of saeculum.secundum(formal) according tosecuriformHaving the form of an axe or hatchet.sedarimplural of sedersedentarismThe habit of being sedentary.sedentism(anthropology) The practice of living in one place for a long time.sediliumA seat in the chancel of a church near the altar, for the officiating clergyman.sedumAny of various succulent plants, of the genus Sedum, native to temperate zones; the stonecrop.seem(copulative) To appear; to look outwardly; to be perceived as.segregationalism(by extension) The isolation of a person or group of people to achieve a specific end.segregationism(politics) A belief in (usually racial) segregation.seigneurialismManorialism; feudalism.seim(uncommon) The hyacinth bean.seismA shaking of the Earth's surface; an earthquake or tremor.seismocardiogramA measurement taken in seismocardiography.seismogram(geology) The graphical output from an accelerograph or seismograph.sejmA political assembly or committee in Poland and the surrounding areas.selamim(historical) Alternative form of celamim.seldomInfrequently, rarely.selectionismAny doctrine or theory that is based on selection, especially in terms of evolution.seleniumA nonmetallic chemical element (symbol Se) with an atomic number of 34, used mainly in glassmaking and pigments and as a semiconductor.selenometabolism(biochemistry) The metabolism of selenium compounds, typically of selenoproteinsselenonium(chemistry) The univalent H₃Se⁺ cation, derived from selane.selenopyrylium(organic chemistry) An aromatic heterocyclic cation that has five carbon atoms and a selenium atomselenotropismThe property of some plants of turning under the influence of light from the Moon.seletracetamA drug of the racetam family, being developed as an anticonvulsant.selfdom(archaic) selfhood.selfharmAlternative form of self-harm.selfismThe practice of focusing concern and effort on the needs of the self.selliformShaped like a saddle.sellisterniumA ritual feast, in Ancient Rome, to celebrate goddessessemClipping of seminary.semagramA semantic symbol (picture or glyph) associated with a concept.semanticismThe belief that semantics is central to grammar.semantogramA symbol used solely for meaning, as when logographic Chinese symbols are used to represent the meaning of native Japanese words.semenogramAn analysis of a patient's semen, including volume, pH, colour, taste, general appearance, spermatozoid concentration, motility and morphologysemialgorithmAlternative form of semi-algorithm.semibarbarianismThe condition of being only partly civilized.semibarbarismThe quality or state of being half barbarous or uncivilized.semicolonialismThe condition of being semicolonial.semicupium(archaic) A half bath, or one that covers only the lower extremities and the hips; a sitz bath.semidwarfismPartial dwarfismsemifascismAlternative spelling of semi-fascism.semifeudalismA semifeudal system.semifirmSomewhat firm.semiformA partial or imperfect form.semigloomPartial gloom or darkness.semilingualismThe phenomenon of people speaking several languages at a low level of development, with evident deficiencies in all languages.semilogarithmAlternative form of semilogarithmic.semiminim(music) A quarter note, or crotchet.seminarianismThe practice or time period of study at a seminary.seminiform(biology) Having the form of a seedseminism(biology, historical) The old theory that the newly created being is formed by the mixture of the seed of the male with the supposed seed of the female.seminogramAlternative form of semenogram.seminomadismA seminomadic lifestyle.seminormAlternative spelling of semi-norm.semionotiformAny extinct fish of the order SemionotiformessemiostracismPartial ostracism.semiovariogramMisspelling of semivariogram.semiparasitismThe quality of being semiparasitic.semipenniform(archaic, anatomy) Half or partially penniform.semipremiumSuperior to the standard version, but not quite premium.semipresidentialismA semipresidential system of government.semiquantum(physics) Describing any system that shows some characteristics of a quantum one; semiclassicalsemirandomPartly random.semirealismA semirealistic approach in art, philosophy, etc.; partial realism.semireniformSomewhat or partly reniform.semisocialismSemisocialist beliefs.semisum(mathematics) half the result of an additionsemiuniformSomewhat uniform; partially uniform.semivariagramAlternative form of semivariogram.semivariogram(statistics) A function of the spatial dependence of semivariance; a graph of this function.semivegetarianismThe practice of being semivegetarian.sempervivumAny of the genus Sempervivum of succulent plants, the houseleeks or liveforevers.sempiternumA durable twilled woollen material.senilism(medicine, gerontology) Premature old age.sensationalism(philosophy) A theory of philosophy that all knowledge is ultimately derived from the senses.sensationism(philosophy) Alternative form of sensationalism.sensillum(zoology) A sensory receptor in certain invertebrates, especially arthropods.sensogramAlternative form of sensorgram.sensorgramA graph of responses versus time in surface plasmon resonance studies.sensorium(psychology) The entire sensory apparatus of an organism.sensualismAddiction to or obsession with sensual pleasures or affairs.sensuism(epistemology, archaic) sensualismsententialism(semantics) The theory that cognition is based on and can be represented as sentences in mentalese.sentiendumThat which is to be felt, or perceived by the senses.sentimentalismA liking for sentimental things.sentiocentrismA viewpoint or theory that places sentient beings at the center of something, giving preference to sentient beings above all other considerations.separatismThe practice of treating members of different societal groups in a politically, legally, or economically different manner.separatumA separate copy of a paper originally published in an academic journal.sepium(archaic) cuttleboneseptarium(geology) A flattened concretionary nodule, usually of limestone, intersected within by cracks which are often filled with calcite, barite, or other minerals.septenniumA period of seven years.septiformHaving the form of a septum.septogramA geometric figure resembling a star with seven points; a heptagramseptuagenarianismThe condition of being in one's eighth decade of life, aged between 70 and 79.septulum(zoology, anatomy, botany) A little septum; a division between small cavities or parts.septum(biology) A wall separating two cavities; a partition.sequanium(obsolete) An early name for the element neptunium, based on a discredited claim of discovery.sequestrumA fragment of bone or other dead tissue that has separated during necrosis.serapeiumAlternative form of serapeum.serapeum(historical) A temple or other religious institution dedicated to the syncretic Greco-Egyptian deity Serapis.seraphimplural of seraphserfdomThe state of being a serf.serfismThe system of serfs as workers attached to land.serialism(music) Music, especially from the 20th century, in which themes are based on a definite order of notes of an equal-tempered scale.seriatimOne after another, in order; taking one topic or subject at a time in an order; sequentially.seriatum(uncommon) a series, a sequencesericterium(zootomy) A silk gland, as in the silkworms.sermonium(historical) A historical play, formerly acted by the inferior orders of the Roman Catholic clergy.seroperitoneumSynonym of hydroperitoneum.seropuriformSynonym of seropurulent.serpentariumSynonym of ophidiarium.serpentiformHaving the form of a snake.serriform(biology) notched, as the blade of a sawserumEllipsis of blood serum.servantdomThe realm or sphere of servants.servilismservile behaviourservomechanismAny system which controls motion automatically using feedback.servosystemA servomechanism or system of servomechanisms.sesamum(archaic) sesamesesquilingualismThe condition of being sesquilingual; the ability to speak one language fluently, and a second language only to a limited extent.sesquimagnesium(inorganic chemistry, in combination) Three magnesium ions in a salt with two divalent anionssesquipedalianism(uncountable) The practice of using long, sometimes obscure, words in speech or writing.sesquipedalism(rare) Alternative form of sesquipedalianism.sesquisodium(inorganic chemistry, in combination) Three sodium cations for every two anionssestertium(historical) A money of account equal to 1000 sestertii.sethoxydimThe herbicide (5RS)-2-[(EZ)-1-(ethoxyimino)butyl]-5-[(2RS)-2-(ethylthio)propyl]-3-hydroxycyclohex-2-en-1-one.setiformHaving the shape or structure of bristles.setimAlternative form of shittim.settlerismAn ideology extolling the virtue of bettering oneself by becoming a settler in undeveloped lands.setuliformResembling a setula.severumThe banded cichlid, Heros severus (previously Cichlasoma severum), a freshwater tropical fish of South America.sexagesm(mathematics, obsolete) Synonym of sexagesimal: a sixtieth part of something.sexaholismAn addiction to sex.sexationalismAlternative form of sexsationalism.sexdigitismThe state of having six fingers on a hand, or six toes on a foot.sexdomThe sphere or world of sex; sexuality.sexenniumA period of six years.sexismThe belief that people of one sex (or gender) are inherently different from those of another sex, and generally that one sex is superior to others.sexodimorphismsexual dimorphismsexorcism(uncommon) Copulation with someone who is possessed, in an attempt to drive out the spirit.sexsationalismThe exploitation of sexually sensational materialsextremismAn extreme form of feminist activism.sexualismThe quality of being sexual; a sex-oriented approach or focus.sexuoeroticismThe state of being sexuoerotic.shackledomThe condition of being imprisoned or restrained.shadchanimplural of shadchanshadeismAlternative form of shadism.shadismPrejudice on the basis of skin pigmentation.shadjam(music) The first of the seven swaras, or primary musical notes.shadkhanimplural of shadkhanshadowgramAn image produced by means of shadowgraphy.shahdomThe position, dignity or jurisdiction of a shah.shaikdomAlternative spelling of sheikdom.shaikhdomAlternative spelling of sheikdom.shakycam(film, television) A style of filming using a handheld camera, giving an on-screen effect of shakiness.shalmObsolete form of shawm.shalom(Judaism) A traditional Jewish greeting or farewell.shamIntended to deceive; false.shamanismAny of a range of traditional beliefs and practices concerned with communication with the spirit world.shamateurismThe fact or practice of being a shamateur; making money out of sports despite professing to be an amateur.shambolism(rare) A shambolic situation.sharebeam(agriculture) The part of a plough to which the share is attached.sharkdomThe state of being a shark, or of belonging to the world of sharks; sharks, collectively.shawmA mediaeval double-reed wind instrument with a conical wooden body.shaykhdomAlternative spelling of sheikdom.shazaamAlternative spelling of shazam.shazamUsed to indicate that a magic trick or other illusion has been performed.sheepdomThe quality or state of being a sheep.sheeshamAlternative form of shisham.sheikdomThe domain ruled by a sheik.sheikhdomAlternative spelling of sheikdom.shekalimplural of shekelshelfroom(countable) A room fitted with shelves for storage.sheloshim(Judaism) A period of thirty days after the burial of a deceased person, during which a mourner is forbidden to do certain things, such as marrying or shaving.sheltrumAlternative form of sheltron.shepherdismPastoral life or occupationsheqalimplural of sheqelsheriffdomThe regions in which a sheriff has authority.sherm(uncountable, slang) The drug phencyclidine (PCP).shiftogram(ecology) A graphical representation of the movement of populationsshigramIn India, a carriage drawn by animals.shinbeamAlternative form of shinbin.shipperdom(fandom slang) Synonym of shipperhood.shiproomStorage space on a ship.shipwormAny of several wormlike marine molluscs (not true worms) of the family Teredinidae that bore through the wooden hulls of ships and other woody material immersed in salt water; specifically, the naval shipworm or turu (Teredo navalis), the type species of the genus Teredo.shishamWood of the tree Dalbergia sissoo.shitbum(vulgar, derogatory) An unclean, or otherwise undesirable person.shitcom(slang, vulgar, derogatory) A low-quality or unfunny sitcom.shitdom(slang, vulgar) A bad or wretched situation.shitstorm(idiomatic, vulgar) Considerable backlash from the public.shitstream(vulgar) A disgusting or contemptible stream (in various senses).shittimplural of shittahshiurimplural of shiurshloshimAlternative form of sheloshim.shochetimplural of shochetshoddydom(archaic, slang, derogatory) The realm or sphere of the shoddyites.shoddyism(colloquial) Shoddy quality or condition.shoebeam(rail transport) A beam of non-conductive material (usually fibreglass or wood), attached to a train bogey that supports the pickup shoe.shoegasm(slang) An intense excitement or pleasure caused by looking at, wearing, or buying shoes.sholomAlternative form of shalom.shomrimplural of shomershopaholismAn addiction to shopping; the condition of a shopaholic.shortform(advertising, of a television advertisement) Running for a relatively short time, typically no more than two minutes.shorttermUncommon form of short-term.shovavim(Judaism) A period of six to eight weeks every year in which, according to some kabbalists, one should focus on repentance for sins, particularly sexual sins.shovelbum(US, archaeology, humorous) A professional excavator on cultural resource management projects, who has done extensive field work.showdomThe realm or sphere of shows or showbusiness.showmanismSynonym of showmanship.showroomA room in a business set aside for the display of the company's products.shram(UK, dialect, dated) To cause to shrink or shrivel with cold; to numb.shrim(West Country) To shrink; to shrivel.shroom(informal, rare) Any mushroom.shtoomAlternative form of shtum.shtumSilent; speechless; dumb.shtummAlternative form of shtum.shunamitism(historical) The ancient practice of an old man sleeping with, but not necessarily having sex with, a young virgin to preserve his youth.shysterismThe behavior and activities of shysters.sialoform(biochemistry) The form of a compound reacted with a sialic acidsialogramThe diagnostic image produced by sialography.sialometabolism(biochemistry) The metabolism of sialic acidssialotropismAttraction to the salivary glands.sickroomA room to be used by someone who is ill.sickularism(India, politics, derogatory) Secularism, viewed as being anti-Hindu.sidearmTo throw a ball with one's arm roughly parallel to the ground.sideform(linguistics, rare) An alternative or variant form of a word or morpheme.siderism(medicine, historical) The supposed curative effects of metals upon the body, in metallotherapy; metallotherapy itself.sideroomA secondary room adjoining a main one.sideseamA seam running along the side (of a garment, a cigarette, etc.).sidestream(chemistry) A stream of fluid taken from an intermediate point in a process such as distillation.sierozemA kind of brownish-grey desert soil.sigillum(law, historical) A sealsiglum(figurative) A thing which represents something else; a sign, a symbol.sigmatismA defective pronunciation of sibilant sounds.sigmoideumsigmoid colonsignalismAn international avant-garde literary and art movement rooted in Serbian culture.signeurialismObsolete spelling of seigneurialism.signumA sign, mark, or symbol.silambamA weapon-based Indian martial art.silicium(obsolete) The chemical element silicon.silicochloroform(inorganic chemistry) The silicon analog of chloroform SiHCl₃silicofluoroform(inorganic chemistry) The compound SiHF₃ analogous to fluoroformsilicum(obsolete, chemistry) siliconsiliquiform(botany) Having the form of a silique.silkwormAny of various caterpillars of moths that produce silk cocoons, especially Bombyx mori, the source of most commercial silk.siloism(management, informatics) A tendency toward the siloization of information.silphium(historical) A plant, thought to be extinct, used in Ancient Greece and Ancient Rome in cooking and as a contraceptive.silthiofamA particular fungicide.silundumA hard form of silicon carbide with high electrical resistance.siluriform(zoology) Characteristic of catfish, of the order Siluriformes, that have barbels that resemble the whiskers of a catsilvalactam(organic chemistry) A macrolactam antibiotic produced by some strains of Streptomycessilvaniform(biology) An insect that inhabits treessilvopastoralismThe state of being silvopastoral.silyliumAny cation formed by a silicon atom with three bonds, having the general formula R₃Si⁺silyllithiumSynonym of lithiosilane.sim(informal) Clipping of simulator.simiiform(zoology) Any member of the Simiiformes.similisexualism(obsolete) Homosexuality.simillimum(homeopathy) A remedy selected because it causes symptoms similar to those that the practitioner wishes to treat.simoomA hot, dry, suffocating, dust-laden wind of the desert, particularly of Arabia, Syria, and neighboring countries, generated by the extreme heat of the parched deserts or sandy plains.simplismThe trait of oversimplifying things by ignoring complexity and complications.simsimSynonym of sesame.simulacrumA physical image or representation of a deity, person, or thing.simulationismAn art movement of the 1980s, somewhat akin to pop art.simulism(rare, formal) A tendency to be similar; resemblance.simultaneumA simultaneous occurrence of unrelated events.sinapismA mustard plaster.sinarchismAlternative form of Sinarquism.sindhooramAlternative form of sindooram.sindhuramAlternative form of sindoor.sindooramAlternative form of sindoor.sinecurismThe state of having a sinecure.singagramsinging telegramsingledomThe state or sphere of those who are single (unmarried or unattached).singleismAlternative spelling of singlism.singlismDiscrimination against and negative perception of single people and singlehood.singularism(philosophy) The philosophical strategy that asserts the validity of only a single interpretation.sinisterismA sinister atmosphere.sinkroom(historical) A room containing a sink for washing things; a scullery.sinocentrismAlternative letter-case form of Sinocentrism.sinogram(linguistics) Any character used in Chinese writing.sinorhizobiumAny bacterium of the genus SinorhizobiumsiphoniformShaped like a siphon.siphonium(anatomy) A bony tube which, in some birds, connects the tympanum with the air chambers of the articular piece of the mandiblesirohaemAlternative spelling of siroheme.sissygasm(BDSM, slang) An orgasm reached solely through penetration of the anus, rather than by stimulation of the penis or clitoris.sissyismThe quality of being a sissy.sisterdomsisterhood; the quality of being a sistersistrumAn ancient Egyptian musical instrument, to be shaken, consisting of a metal frame holding percussive metal beads.sisymbriumAny plant of the genus Sisymbrium.sisyrinchium(botany) Any plant of the genus Sisyrinchium.sitcomSituation comedy.sitdramA dramatic sitcom.sitotoxismFood poisoning, especially when caused by spoiled grain.situationism(psychology) A school of thought which holds that personality is more influenced by external factors than by internal traits or motivations.situliformShaped like a situla.siyum(Judaism) A celebration held upon completing the reading of a unit of Judaic scripture; a graduation.sizeismDiscrimination based on a person's size (such as height, girth, or weight).sizismAlternative form of sizeism.skeletalism(rare) The process of making something skeletal, or reducing it to the barest form.skellum(South Africa) A rogue.skelmAlternative form of schelm.skepticism(philosophy) The practice or philosophy of being a skeptic.skiagramA picture or image created from shadows, especially with X-rays.skim(intransitive) To pass lightly; to glide along in an even, smooth course; to glide along near the surface.skinheadismThe practices or beliefs of skinheads.skinimalism(neologism) A skincare philosophy which emphasizes simplicity and only using products which are absolutely necessary.skookumA type of doll in the form of a Native American.skototropismGrowth or movement toward darknessskrimA loose-weave fabric made of fiberglass, used for insulation.skumObsolete spelling of scum (“surface impurities”).skycam(chiefly science fiction) A camera mounted or flying in the sky, taking aerial pictures or video footage.skyfarmA skyscraper used for skyfarming.skyrmionium(physics) A pair of skyrmions of opposite topological quantum numbersslackcom(UK) A sitcom which revolves around a slacker or slackers.slackerdomThe world or lifestyle of slackers; laziness.slackerismlaziness; idlenessslacktivism(informal, derogatory) Half-hearted activism, usually in the form of posting badges, images, apps, or text on social media without taking further action.slactivismAlternative form of slacktivism.slalom(uncountable, sports, often attributive) The sport of skiing in a zigzag course through gates.slam(transitive, ergative) To shut with sudden force so as to produce a shock and noise.slangdomThe world of slang; slang words and expressions collectively; the use of slang.slangismA slang word or expression; a colloquialism.slashdom(fandom slang) The culture or community of slash fiction writers.slaughterdomSlaughter; carnage.slavedomA region or realm where slavery exists.slentemAlternative form of slenthem.slenthemA Javanese metallophone.slipform(countable) A moveable form used when setting concrete using the slipform technique.slipstreamThe low-pressure zone immediately following a rapidly moving object, caused by turbulence.sloam(mining) A layer of earth between coal seams.slobbismSlobbish behaviour; slovenliness.slobdomThe quality of being a slob.sloganismsloganeeringsloomA gentle sleep; slumber.slowwormA small Old World lizard, Anguis fragilis, often mistaken for a snake, having no legs and small eyes.slugwormAny of a number of caterpillars which have the general appearance of a slug.slum(countable, derogatory) A dilapidated neighborhood where many people live in a state of poverty.slumdomThe state or quality of being a slum.slumgumThe impure residue, consisting of cocoons, propolis, etc., remaining after the wax is extracted from honeycombs.slumismThe decay of urban areas into slums.slummismAlternative form of slumism.slutdom(sometimes offensive) The state or quality of being a slut.sm(knitting) Initialism of slip marker.smalm(transitive) To smear or daub.smarmSmarmy language or behavior.smartmodem(computing) A modem controlled through a simple command language, rather than by manual switches.smeddumFine powder; flour.smokeroomSynonym of smoking room.smokum(dated, humorous) To smoke.snackadium(informal) A party platter with various snack items arranged in the shape of a football stadium.snakedomThe state or essence of being a snake.snam(transitive, Scotland) To snatch with the jaws; snap at something greedily.snapbrimOf a hat, having a brim that is flexible enough to be worn turned up in the back and snapped down in the front to shade the eyes.snobbismA snobbish attitude, particularly in relation to art or high culture.snobdomThe realm or sphere of snobs.snobismAlternative spelling of snobbism.snoregasmA very unsatisfying or obviously fake orgasm.snorgasmAlternative form of snoregasm.snowcreamAlternative form of snow cream.snowstormBad weather involving blowing winds and snow, or blowing winds and heavy snowfall amount.soamA chain by which a leading horse draws a plough.soapdomsoap operas collectivelysocdem(usually uncountable) Social democracy.socialismAny of various economic and political theories advocating collective or governmental ownership and administration of the means of production and distribution of goods.societismA social philosophy that promotes the well-being of the group without sacrificing the significance of the individual.sociocentrismThe tendency to look at the world primarily from the perspective of one's own social group or society.socioconstructivism(sociology) social constructivismsociogramA graphic representation of the structure of interpersonal relations in a group situation; a depiction of the social links that a person has.sociologismThe attribution of a sociological basis to another discipline.socrealismClipped compound of socialist realism.sodium(attributive) Employing sodium.softbottomA soft seafloor, typically composed of muddy sediment.softmodem(computing, networking) A modem with minimal hardware capabilities, designed to use a host computer's resources to perform most of the tasks performed by dedicated hardware in a traditional modem.solanum(botany) Any plant in the genus Solanum.solarismSun worship; heliotheism.solariumAn earthen structure constructed by certain ants for the purpose of brood incubation.solatium(law) A form of compensation for emotional rather than physical or financial harm.solecismAn error or improper usage.solidarismAny of several social movements which advocate various kinds of solidarity; see Solidarism.solidism(medicine, obsolete) The doctrine that the solid parts of the body are the only parts that have vital properties and are susceptible to diseasesolidum(architecture) The die of a pedestal.solifidianism(theology) The beliefs or doctrines of the solifidians.soliformLike the sun in appearance or nature.solipsism(philosophy) The idea that the self is all that exists or that can be proven to exist.soloecismAlternative form of solecism.soloism(colloquial) The practice of performing solos, especially in music or airplane flying training.solumWithin a soil profile, a set of related soil horizons that share the same cycle of pedogenic processes; the upper layers of a soil profile that are affected by climate.solutionismThe belief that all difficulties have benign solutions, often of a technocratic nature.solvatochromism(chemistry) A change in colour (due to changes in position and/or intensity of absorption or emission bands) that accompanies a change in the polarity of a solventsolvatofluorochromism(chemistry, physics) The effect of solvent on the colour and fluorescence of dyessomThe currency of Kyrgyzstan. Symbol: ⃀.somaticism(pathology) Synonym of somatic symptom disorder.somatiformAlternative form of somatoform.somatism(uncountable) Somatist beliefs generally.somatoform(medicine) Having no physical or organic causesomatogramA graphical representation of a somatotypesomatoplasmThe protoplasm of somatic cells.somatotropism(biology) A directive influence exercised by a mass of matter upon growing organs.somatremAn analogue of human growth hormone (human somatotropin), almost molecularly identical except for a minor difference at certain amino acid residues. Produced recombinantly. Mostly superseded in current practice by somatropin, which is also molecularly similar to the endogenous hormone (i.e., slightly more so).somm(informal) Clipping of sommelier.somnambulismsleepwalkingsomniloquismsleeptalkingsomnogramA set of measurements taken by means of somnography.somnolismThe state of being in hypnotic sleepsomtamAlternative form of som tam.somtumAlternative form of som tam.sonochromatismA neurological phenomenon in which colours are perceived as sounds.sonoelastogramAn image produced by sonoelastography.sonogramClipping of ultrasonogram: A medical image produced by an ultrasound echo.sonohysterogramAn image produced by sonohysterographysonomyogramA sonogram of muscle tissuesoolam(Hinduism, India, Malaysia, Tamil context) a trident, a trishula; a sacred weapon used by Hindu deities.sopherimplural of sophersophism(uncountable, historical) The school of the sophists in antiquity; their beliefs and method of teaching philosophy and rhetoric.sophisticismThe philosophy or the methods of the sophists.soralium(botany) A cluster of sorediasoredium(lichenology) A common scalelike reproductive structure in lichens consisting of algal cells enveloped in a network of hyphae.sorghum(Southern US) Sorghum syrup.sostrum(obsolete) A reward given for saving a person's life; a physician's fee.soundsystemAlternative spelling of sound system (chiefly the Jamaican sense)sourcreamAlternative spelling of sour cream.sourgumAlternative spelling of sorghum.southernismAnything characteristic of the southern part of a region, especially the southern United States.souverainismAlternative form of sovereignism.sovereigndomThe state, condition, or realm of a sovereign; sovereignty.sovereignismThe defence of the sovereignty of individual European countries in the face of broader European or European Union integration.sovereigntismAlternative form of sovereignism.sowm(Scotland) The proportion of sheep or cattle suitable for a given pasture.sozialism(non-native speakers' English) Misspelling of socialism.spaceariumAlternative letter-case form of Spacearium.spacegram(science fiction) A short written message physically sent through space.spaedomSynonym of spae-craft (“magical divination of the future”).spam(uncountable, rarely countable, computing, Internet) Unsolicited bulk electronic messages.spangenhelmA kind of medieval European combat helmet, constructed of several plates connected by bands into a conical covering for the top of the head, sometimes with a nasal, eye protection, or cheek plates.spanwormA measuring worm or inchworm (Lepidoptera, Geometridae)sparganium(botany) Any of the plants of the genus Sparganium.sparganumThe plerocercoid larva of Spirometra tapeworms, responsible for sparganosis.sparrowdomThe realm or sphere of sparrows.spartanismA devotion to the habits and qualities of the ancient Spartans, especially an indomitable spirit, undaunted hardihood, and stark simplicity.spasmA sudden, involuntary contraction of a muscle, a group of muscles, or a hollow organ.spasmodism(medicine, obsolete) A spasmodic condition due to medullary excitation.spathiform(mineralogy) Resembling spar in form.spathiphyllum(botany) Any plant of the genus Spathiphyllum.spatiogramA histogram that contains additional spatial informationspatuliformShaped like a spatula.spazmMisspelling of spasm.specialism(countable) Speciality.specieismRare spelling of speciesism.speciesism(philosophy, ethics) An ethical stance that assigns different worth or rights to beings on the basis of their species membership, such as assigning greater rights to human beings than to other animals.speciesmAlternative form of speciesism.specillumA surgical probe.specismAlternative form of speciesism.spectacularismThe quality of being spectacular.spectaculum(archaic, rare) A spectacle.spectatordomThe role or status of spectator.spectatorismThe practice of being a spectator, of watching rather than taking part.spectralismA musical composition practice in which compositional decisions are often informed by the analysis of sound spectraspectrogramA visual representation of the spectrum of a sound changing through time.spectroheliogram(astronomy) a photograph taken using a spectroheliographspectrophotogramAn image produced by spectrophotography.spectrumA range; a continuous, infinite, one-dimensional set, possibly bounded by extremes.speculativismAn approach based on speculation rather than any formal method.speculum(medicine) A medical instrument used during an examination to dilate an orifice.spekboomA South African shrub (Portulacaria afra), whose succulent leaves are used as fodder.speleothem(geology) Any secondary mineral, deposited in a natural cave by the action of water. Includes formations such as stalactites, stalagmites, flowstones, and helictites.speleothermAlternative form of speleothem.spendthriftismThe condition of being a spendthrift; profligacy.sperm(countable) The reproductive cell or gamete of the male; a spermatozoon.spermagonium(lichenology) Alternative spelling of spermogonium.spermatagoniumAlternative form of spermatogonium.spermatangiumSynonym of gametangium.spermatismThe emission of sperm or semen.spermatiumOne of the motionless spermatozoids in the conceptacles of certain fungi.spermatogomiumMisspelling of spermatogonium.spermatogonangiumThe structure that carries the spermatogoniaspermatogonium(biology) Any of the undifferentiated cells in the male gonads that become spermatocytes; a spermatoblastspermatovum(biology) A fecundated ovum.spermidium(obsolete, botany) An achene.spermiogramSynonym of semenogram.spermismThe belief, held by spermists, that the male sperm holds the whole germ of the future animal.spermoderm(botany, archaic) A seed coat or testa.spermogonium(lichenology) A conceptacle of certain lichens, containing spermatia.spermogramAlternative form of spermiogram.spermophorum(obsolete) A seminal vesicle.spermoplasm(cytology) The cytoplasm of spermatozoasperomagnetismThe quality of being speromagnetic.spetum(historical) A medieval long spear with two sharp tapering blades projecting forward at roughly around 45 degrees with the blunt side facing the opponent.sphaeridium(botany) Synonym of capitulum.sphaeristerium(architecture) A large open space connected with the Ancient Roman thermae, for exercise with balls after the bather had been anointed.sphagnumAny of various widely distributed mosses, of genus Sphagnum, which slowly decompose to form peat.spheniciformMisspelling of sphenisciform.sphenisciformAny penguin of the order Sphenisciformessphenogram(archaic) A cuneiform character/symbol.spheriformspherical in shapespherium(physics, mathematics) A model of a form of atom composed of two electrons restricted to the surface of a sphere.spherochromatismchromatic aberrationspheroform(geometry) A three-dimensional, convex form that has a constant thicknessspheroidism(rare) The quality of having a spheroidal shape.spheroplasmThe cytoplasm of a spheroplastsphingobacteriumAny bacterium of the class SphingobacteriasphygmogramThe recording made by a sphygmographspicatum(masonry) Ellipsis of opus spicatum.spiciform(botany) spike-shapedspiculiform(archaic, zoology) Having the shape of a spicule.spiculumA thrusting javelin used by Romans that replaced the pilum in the late 3rd century.spiderdomThe condition of being a spider; or, spiders in general.spidergramA spider diagramspim(telephony) Unsolicited messages sent to cellular phones.spindleworm(rare) The larva of a noctuid moth (Achatodes zeae) which feeds inside the stalks of maize. It is smooth, with a black head and tail and a row of black dots across each segment.spindom(nonce word, humorous) The realm, territory, or sphere of spinning.spinetoramA particular pesticide related to spinosynspinfoamAlternative spelling of spin foam.spiniformShaped like a spine.spinocerebellum(anatomy) The vermis, together with parts of the hemispheres of the brain; it regulates body movementspinogramA radiograph of the spine or spinal cordspinonymA type of ambigram in which a word is written using the same glyph repeated in different orientations.spinsterdomThe state of being a spinster.spinsterismThe state of a woman who is a spinster, i.e. unwed.spintherism(medicine) photopsiaspinuliformResembling a spinule.spiraculiformResembling a spiracle.spiraliformspiral-shapedspiralismThe tendency of employees to move and live in different places in line with their successive promotions.spiremAlternative form of spireme.spirillumAny of various aerobic bacteria of the genus Spirillum, having an elongated spiral form and bearing a tuft of flagella.spiritdomThe sphere, realm, or world of the spirit; spirituality; spirits collectively.spiritismSpiritualism.spiritualismA belief that the dead communicate with the living, especially through a medium. Used in a broader sense than spiritism.spiroatom(organic chemistry) The connecting atom in a spiro compound.spirobacterium(bacteriology, dated) Any bacterium found in spiral filaments, such as the genus Vibrio.spirogermaniumAn immunostimulant drug.spirogramA graph of respiratory movementspirolactam(organic chemistry) Any spiro compound containing a bridged lactam groupspizzerinctum(US, informal) Chutzpah, guts, nerve, or backbone.splachnocraniumMisspelling of splanchnocranium.splanchnocraniumviscerocraniumsplancnocraniumMisspelling of splanchnocranium.splenium(anatomy, neurology) The thick posterior part of the corpus callosum of the brain.splenotropism(biology) Movement towards, or attraction to the spleenspliceformAlternative form of splice form.spliceoformAlternative form of splice form.splitismAlternative form of splittism.splitterismThe ideology of a splitter (one who prefers to split categories into smaller groups).splittismPolitical separatism, specifically the following of independent interests as opposed to central Communist party policy.spodiumBone charcoal, used as bleaching material or in the purification of sugar.spoilsportism(rare) The behaviour of a spoilsport, putting an end to the fun of others.spoliariumSynonym of spoliary.spoliumThe property of a beneficed ecclesiastic not transmissible by will.spongiformLike a sponge, porous, full of holes.spongiostratumA layer of net-like anastomosing hyphae on lower surface of some ascomycetesspontaneism(politics) The belief that a revolution should arise spontaneously.spookdom(slang) The realm or sphere of spies.spookism(informal) Spooky or ghostly things; spookery.spoom(nautical) To sail briskly with the wind astern, with or without sails hoisted.spoonclamAny bivalve mollusc of the family Periplomatidaespoonerism(linguistics, rhetoric) A play on words on a phrase in which the initial (usually consonantal) sounds of two or more of the main words are transposed.spooneyismAlternative spelling of spoonyism.spoonwormAlternative form of spoon worm.spoonyism(archaic) Foolish romantic infatuation.sporadismThe quality of being sporadic.sporangiformResembling a sporangium.sporangiolum(mycology) a small sporangiumsporangium(botany, mycology) A case, capsule, or container in which spores are produced by an organism.sporidesm(botany, rare) A pluricellular body which becomes free like a simple spore, and in which every cell is capable of germination.sporidiolumA secondary sporidium.sporidium(botany) A secondary spore borne on a promycelium, or a filament produced from a spore, in certain kinds of minute fungi.sporodermThe wall or covering of a spore.sporodochiumA small, compact stroma (mass of hyphae) usually formed on host plants parasitized by mitosporic fungi of the form order Tuberculariales (Deuteromycota, Hyphomycetes). It bears the conidiophores on which the asexual spores or conidia are formedsporogoniumThe sporophyte of a bryophyte (moss, liverwort or hornwort), generally consisting of a foot, seta and capsule.sporoplasm(biology) The protoplasm of a spore, particularly in the myxospores.sporostegium(botany) The so-called fruit of plants in the family Characeae of green algae, consisting of the hard brownish spirally-twisted shell or covering of the spore.sportsdomThe world or sphere of sport.spotbeamAlternative form of spot beam.spousedomThe state or quality of being a spouse.spreadeagleismA pretentious, boastful, jingoistic attitude.spreadeaglismAlternative form of spreadeagleism.springform(often attributive) A round baking tin with a rim that can be detached from the base, making it easy to remove the contents after baking.sproutarianismThe practice of following a sproutarian diet.sputum(medicine, pulmonology) Matter coughed up and expectorated from the mouth, composed of saliva and discharges from the respiratory passages such as mucus, phlegm or pus.spycamA camera, especially a webcam, used for covert surveillance.spydomA group of spiesspyism(archaic) spying; espionagesqmAbbreviation of square metre.squadrism(historical) A policy of violence by squads of Fascists in Italy after the First World War.squaliformShaped like a sharksquam(US, fishing) An oilskin hat; a southwester.squamiformHaving the shape or structure of a scale.squamuliformResembling a squamula or little scale.squantum(US, Nantucket dialect, possibly dated) A picnic on the beach, a clambake.squarylium(organic chemistry, in combination) An aromatic quaternary ammonium cation, derived from squaric acid, that is the basis of some fluorescent dyessquatiniformAny angel shark of the order SquatiniformessquatterdomThe realm or sphere of squatters.squatterismThe habits of squatters, occupying land without permission.squawdomThe world or sphere of squaws.squealdom(nonce word) Loud and noisy squealing.squiredomThe rank of squire, or the period of being a squire.squirm(intransitive) To twist one's body with snakelike motions.squirreldomThe condition or state of being a squirrel, or of belonging to the world of squirrels; squirrels collectively.stabilimentumA particular web structure made by some spiders.stabilism(geology) Synonym of fixism.stabilogramA graphical representation of the small movements of a person in a stable stance (as feedback responds to potential instabilities)stabilomorphismThe survival of one species out of many in a mass extinctionstachybotrylactam(organic chemistry) The lactam mycotoxin 3,4'-dihydroxy-4,4,7,8a-tetramethylspiro[2,3,4a,5,6,7-hexahydro-1H-naphthalene-8,2'-7,8-dihydro-3H-furo[2,3-e]isoindole]-6'-one produced by fungus of the genus StachybotrysstackroomA room that houses stacks in a library.stadialismThe theory that a society, culture, etc. passes through a series of developmental stages.stadiumA venue where sporting events are held.staffroomA room set aside for the use of staff.stagedomThe theatrical world.stagism(communism) The theory that society ought to pass gradually in order to arrive at communism: first through capitalism, then through socialism (the worker’s state).stagnum(obsolete) A millpond.stagwormThe larva of Cephenemyia auribarbis, which infests the stag.stalactiformResembling a stalactite.stalactitiform(archaic, geology, mineralogy) Having the form of a stalactite; stalactiform.stalwartismA stalwart approach or attitude.stam(UK, dialect, obsolete, transitive) To confound.staminodium(botany, uncommon) Alternative form of staminode.standardismThe practice of following or imposing standards.standom(slang, sometimes derogatory) Obsessive or excessive fandom; the fandom of stans.standpatismresistance to changestandpattismAlternative form of standpatism.standpointismA focus on the subjective standpoints of individuals, as opposed to objectivity.stannum(chemistry, rare) tinstannyliumAny cation formed by a tin atom with three bonds, having the general formula R₃Sn⁺starbeam(astronomy, very rare) A ray or set of rays of starlight (light emitted from a star); especially, an intense and visible one, as revealed for example by its diffraction among dust particles.stardomThe status or position of a performer acknowledged to be a star; fame; celebrity.startscum(intransitive, video games, roguelikes, derogatory) To start and quit the game repeatedly in order to obtain a favourable starting situation (this being generated at random for each game).statedomThe state of being a state (a polity).stateismAlternative form of statism.stateroomAn apartment in a palace or great house for use on ceremonial occasions.statismThe belief that most or all political power should be centralized in national governments.statisticismExcessive reliance on statistics.statoconium(anatomy, medicine) Synonym of otolith.statohmA unit of electrical resistance.statokinesigramA graphical record of the shifts in posture of a person attempting to stand stillstatokinesiogramAlternative form of statokinesigram.statuvolism(now historical) Self-hypnosis.staurogramA ligature, ⳨, of the Greek letters τ and ρ or Coptic letters ⲧ and ⲣ, later used as a symbol of the cross in early Christianity and remaining in use as a ligature in abbreviations of the words σταυρός and σταυρόω.steamThe hot gaseous form of water, formed when water changes from the liquid phase to the gas phase (at or above its boiling point temperature).steatodism(medicine) The symptoms caused by the bite of spiders of the genus Steatoda.steeldrumAlternative form of steel drum.steelwormSynonym of slowwormsteem(obsolete) A gleam of light; a flame.steganogramA steganographic image.stegostomThe posterior (innermost) portion of the stoma (oral cavity) of a nematode.stelliformShaped like a star.stemThe stock of a family; a race or generation of progenitors.stenoderm(zoology) Any of the bats resembling that of the genus Stenoderma.stenogramA work resulting from using stenography, a shorthand, a transcriptstenotherm(biology) An organism, often specifically an ectotherm, that functions only within a narrow temperature range.stephanoberyciformAny fish of the order Stephanoberyciformesstepmam(Ireland, Northern England, Wales, informal) Stepmother.stepmom(US, informal) Stepmother.stepmum(UK, Australia, Canada, New England, informal) Stepmother.stercoranismThe belief or doctrine of stercoranists.stercorianism(historical, derogatory) The doctrine or belief of the stercoranists.stereocilium(anatomy) Any of many nonmotile cellular structures resembling long microvilli; those of the inner ear are responsible for auditory transductionstereodiagramA stereoscopic diagramstereoencephalogramA stereoscopic encephalogramstereogramA stereoscopic image.stereoisoformSynonym of stereoisomer.stereoisomerism(chemistry) A form of isomerism in which atoms are arranged differently about a chiral centre (or centre of asymmetry). They exhibit optical activity, and in a molecule with a single chiral centre the two isomers (enantiomers) are mirror images of each other whereas in a molecule with multiple chiral centres the isomers (diastereoisomers) are not normally mirror images.stereophotogramA stereoscopic photogram.stereoplasm(biology) The solid or insoluble portion of the cell protoplasm.stereoradiogramA diagnostic image produced by stereoradiography.stereoscopismstereoscopic vision; stereoscopystereotropismSynonym of thigmatropism.stereovillumSynonym of stereocilium.stereozoom(of a microscope) Having both stereo and zoom capabilitiessterigmatum(mycology) Alternative form of sterigma.sternum(anatomy) The breastbone, consisting of the manubrium, gladiolus, and xiphoid process.stethidium(zoology) An insect's thorax.stewbum(US, slang) A homeless alcoholic.stfandom(dated, fandom slang) The subculture of science fiction fans.stfdom(dated, fandom slang) The subculture of science fiction fans, the community of science fiction writers and fans.stfilm(dated, fandom slang) A film in the science fiction genre.stibialism(medicine, dated) antimony intoxication or poisoning.stibiumkohl: stibnite used in ancient Egypt and Rome for eye cosmetics.stibonium(chemistry) the univalent H₄Sb⁺ cation, derived from stibanestichidiumA special pod-like or fusiform branch containing tetraspores, found in certain red algae.sticklerism(derogatory) The behaviour of a stickler; inflexible adherence to rules.stickum(Canada, US, informal) Any adhesive, adhesive residue; any sticky or gummy substance.stigmatism(medicine) Normal eyesight, anastigmatic statestillicidium(medicine, obsolete) A morbid trickling.stilliformHaving the shape or structure of a drop.stillroomA room containing a still (for distillation).stim(informal, uncountable) Sensory stimulation.stimulism(medicine, obsolete) The practice of treating disease by alcoholic stimulants.stinkerdom(slang) The state or sphere of stinkers; contemptible behaviour.stipitiform(botany) Having the shape of a stalk.stipuliform(botany) Resembling a stipule.stochasticismThe condition of being stochastic.stockroomA room where a store keeps its stock of merchandise.stoicismA real or pretended indifference to pleasure or pain; insensibility; impassiveness.stomatodaeumAlternative form of stomodeum.stomatodeumAlternative form of stomodaeum.stomiiform(ichthyology) Of or from the order Stomiiformes of ray-finned fish.stomium(botany) The region of a sporangium where dehiscence takes placestomodaeumAlternative spelling of stomodeum.stomodeum(anatomy) A depression on the ectoderm of a developing embryo that becomes the mouth.stoomAlternative form of stum.stoorwormAlternative form of stoor worm.stoponium(physics) A hypothetical bound state of a superpartner of the top quark in some supersymmetric theories.storeroomA room used for storage.storiform(sciences) In the shape of a cartwheel.stormA heavy expulsion or fall of things (as blows, objects which are thrown, etc.).strabism(medicine) strabismusstragulum(zoology) The mantle, or pallium, of a bird.stramTo slam; to beat or put down or close violently or noisily.stramoniumThe jimsonweed or thornapple plant, Datura stramonium.strangeonium(particle physics) Any meson formed from a strange quark and its antiquarkstrangerdomThe condition or status of being a stranger.stratagemA tactic or artifice designed to gain the upper hand, especially one involving underhanded dealings or deception.strategemMisspelling of stratagem.stratiformOccurring in layersstratocladogram(genetics) A stratocladistic diagramstratocumuliform(meteorology, of clouds) Resembling cumulus but with extensive horizontal development.stratumOne of several parallel horizontal layers of material arranged one on top of another.strawwormThe grub of the caddis fly.streamA small river; a large creek; a body of moving water confined by banks.streetwisdomSynonym of streetwisenessstreptobacterium(dated, bacteriology) A supposed variety of bacterium, consisting in reality of several bacteria, for example, Lactobacillus, linked together to form a chain.striatum(neuroanatomy) The caudate nucleus and the lentiform nucleus considered as a single structure.strim(British) To cut using a strimmer/string trimmer.stripagramAlternative form of strippergram.stripogramAlternative form of strippergram.strippagramAlternative form of stripogram.strippergramA stripper hired to deliver a message or greeting.strippogramAlternative form of stripogram.stroam(UK, intransitive, obsolete) To wander about idly and without purpose.strobiliformShaped like a strobile.stromateiformAny butterfish of the order StromateiformesstromatiformResembling stroma.strongarmAlternative spelling of strong-arm.strongroomA strongly built room or vault where valuables may be safely stored.strontiumThe metallic chemical element (symbol Sr) with an atomic number of 38. It is a soft, reactive, silvery alkaline earth metal.strophium(historical) A band worn around the breasts, serving as a form of bra in ancient times.structuralismA theory of sociology that views elements of society as part of a cohesive, self-supporting structure.struggleism(rare) A doctrine or philosophy based around struggle or conflict.strum(ambitransitive) To play (a guitar or other stringed instrument) by plucking various strings simultaneously.strumiformHaving the form of a struma.strumstrum(archaic, often derogatory) Any stringed musical instrument that is played with the fingertips, especially one considered to be foreign.struthioniform(zoology) Of or relating to the Struthioniformes, an order of birds.strychninismStrychnine poisoning.strychnismAlternative form of strychninism.studfarmAlternative form of stud farm.studygram(Internet slang) An Instagram account focused on studying or academia.stulm(mining) A shaft, conduit, adit, or gallery to drain a mine.stum(transitive, obsolete) To ferment.stumblebumA blundering or awkward person.stumpcamAlternative form of stump cam.stuprum(chiefly Ancient Rome) rapestyledomThe fashionable world; the realm or sphere of popular style.stylephoriformAny fish of the order StylephoriformesstyletiformShaped like a stylet.styliformHaving the form of, or resembling, a bristle, pin, or pen; styloid.stylismA particular style that is employed; a stylistic choice.stylodium(botany) An elongate stigma that resembles a style.styloformSynonym of styloid.stylopodium(botany) An expansion at the base of the style, as in umbelliferous plants.styrofoamExpanded polystyrene foam, such as is used in cups and packaging.styrylpyridinium(organic chemistry, especially in combination) Any styryl derivative of a pyridinium radicalsubaerialismThe ascription of the greater inequalities in the earth's surface to atmospheric influences.subalgorithm(programming) An algorithm that forms a part of a larger algorithm.subalternism(social sciences, literary theory) The condition of being a subaltern.subangstrom(physics) Smaller than an angstromsubatomAny particle that is smaller than an atom; a subatomic particle.subatriumA chamber that leads into an atriumsubbottomBeing below the bottom of something.subcallosum(anatomy) The subcallosal region of the corpus callosumsubcarangiformDescribing a mode of swimming by fish in which most of the propulsion is provided by the tail but some is provided by movements of the bodysubcheliformAlmost or imperfectly cheliform.subcinctorium(Christianity) An ornamental vestment reserved for the pope, resembling a maniple and worn at a solemn pontifical Mass.subclaimA claim forming part of a larger claim.subcontinuum(mathematics) A continuum making up part of another continuum.subcordiformAlmost or imperfectly cordiform.subcurriculumAn academic curriculum forming part of a larger curriculum.subdeliriumMild delirium.subdiagramA diagram making up part of a larger diagram, or obtained by removing sections of the larger one.subendocardium(anatomy) The layer of tissue beneath the endocardiumsubendothelium(anatomy) The connective tissue below an endothelial layer.subepicardiumA layer of cells beneath the epicardiumsubepineuriumThe region beneath an epineuriumsubepithelium(anatomy) The layer immediately under the epitheliumsuberiformResembling cork; corky.subfalciformAlmost or imperfectly falciform.subfandomA subdivision of a larger fandom or fan community.subform(taxonomy) A taxon below the level of form.subforum(Internet) A single message board that is part of an online discussion forum.subfusiformAlmost or imperfectly fusiform.subgramAt levels of less than a gram.subgumA Cantonese dish consisting of mixed meat and vegetables, often in combination with noodles, rice, or soup.subhymeniumThe supportive hyphae from which the cells of the hymenium grow.subiculum(botany) A felted or byssoid stratum of hyphae, bearing perithecia.subilium(anatomy) The lower layer of the iliumsubimperialism(politics) A form of imperialism (“policy of forcefully extending a nation's authority by territorial gain or by the establishment of economic and political dominance over other nations”) which is subordinate to another imperialist power.subisoformA subtype of an isoformsubitemAn item that is subordinated to another item.subjectdomThe condition or state of being a subject; subjecthood.subjectivism(metaphysics) The doctrine that reality is created or shaped by the mind.subkingdom(taxonomy) A taxonomic category below kingdom and above superphylum.sublageniform(mycology) Slightly lageniform.sublapsarianisminfralapsarianismsubligaculum(Ancient Rome) A kind of underwear worn in Ancient Rome.submarinism(dated) The use of submarines in warfare.submariumAn aquarium with many sea creatures.submaximA maxim making up part of a greater maxim.submaximumA point or value below a maximum.submechanism(chemistry) A subset of a mechanismsubmentum(zoology) The basal part of the labium of insects, which bears the mentum.submicrogramBeing or relating to a quantity of less than a microgramsubminimumBelow the normal minimumsubmissionism(US, historical) The beliefs of the submissionists.submmAbbreviation of submillimeter.submolariformSomewhat molariformsubnanogramHaving a mass of less than a nanogramsubnivium(ecology) The seasonal microenvironment beneath the snow.subohmOn a scale of less than an ohm.suboperculum(anatomy) The lower opercular bone in fishes.subordinationism(Christianity, theology) A doctrine regarding the Trinity, holding that the Son and possibly the Holy Spirit are inferior to the Father.subpallium(anatomy, neuroanatomy, biology, neurobiology) A layer of the cerebrum below the pallium.subphylum(taxonomy) A taxonomic category below phylum and above classsubpicogramHaving a mass of less than a picogramsubplatformA platform that forms part of a larger platform.subpremiumBelow premium grade.subproblemA problem whose solution contributes to the solution of a larger problem.subprogram(computing) A program contained within a larger program.subpseudopodiumSynonym of subpseudopod.subpyriformSomewhat pyriform.subquantum(physics) Describing any of several approaches to describe physical phenomena by means of hidden variables or other alternatives to quantum physicssubrealism(art) An artistic movement that seeks to explore the basis of perception.subrefugiumA subordinate refugiumsubregnum(taxonomy) A subkingdom.subreniformSomewhat kidney-shapedsubroomA room within a larger room.subselliumA projecting ledge on the stalls in a church where persons might lean whilst standing during prayers; misericord.subspecialismsubspecialtysubspectrum(physics) Any of a number of spectra of components of a mixture that together make an observed spectrumsubspiniformAlmost or imperfectly spiniform.substantialism(philosophy) The doctrine that substantial reality is the basis of all phenomenasubstantivalism(philosophy) The doctrine that space and time have an existence independent of physical things.substantivismAn approach to economics that distinguishes between two forms of economics: the rational choice between uses of limited resources; and the way in which humans make a living interacting within their social and natural environments.substem(botany) One of several plant stems splitting off from a main stem.substituendum(linguistics) Something to be substituted or replaced.substorm(astronomy) A phenomenon in which a magnetotail becomes swollen and unstable.substratism(linguistics) The theory that creoles take their structure from their substrate languages.substratumA layer that lies underneath another.substream(computing) A stream contained within another stream.subsubproblemA subproblem of a subproblem.subsum(mathematics) The sum of a subset of values.subswarmA swarm making up part of a larger swarm.subsymptomBelow which, symptoms are not displayedsubsynoviumThe lowest layer of a synoviumsubsystemAlternative spelling of sub-system.subteamA team that makes up part of a larger team.subterm(mathematics, law, computing) A subordinate term.subtilism(archaic) The quality or state of being subtile.subtomogramPart of a tomogram or of a series of overlapping tomogramssubtotemA secondary or subordinate totem, such as one associated with a specific subtribe.subtrapeziformShaped like a trapezium with an apical depressionsubuliform(biology) subulatesubuniformApproximately uniform; not quite even.suburbandomSynonym of suburbanism.suburbanismSuburban lifestyles and attitudes generallysuburotheliumThe area under the urotheliumsubvacuum(physics) A quantum field or spacetime obtained from a vacuum by a "squeezing" processsubvermiformSomewhat or nearly vermiform.subversivismsubversive attitudes and behavioursuccdem(Internet slang, politics, humorous, derogatory) Contraction of social democrat.succedaneumA substitute, replacement for something else, particularly of a medicine used in place of another.successionismsuccessionist beliefssuccessismThe ideology of striving for competition; achievement-orientation.succinctoriumAn ornament, resembling a small maniple, that hangs from the girdle used by the pope at the celebration of Mass.suckerdomThe state of being a sucker, or gullible person.sudarium(archaic or historical) A napkin or handkerchief.sudatoriumA hot room used to induce sweating, steam room, steam bath, sauna.sudoxicam(pharmacology) A particular benzothiazine carboxamide that is a cyclooxygenase inhibitorsufficientarianismThe sufficientarian philosophy.suffragettismThe suffragette movement for women's voting rights.suffragism(historical) A political movement in the late 19th century that fought for women's right to vote in Great Britain and the United States.sugarplumAlternative spelling of sugar-plum.suggestionismThe use of hypnotic suggestion.suggestum(obsolete) A raised platform.suicidismThe quality or state of being suicidal.suicismSelfishness; egoism.suiform(zoology) Resembling a pig (of the family Suidae)suitheism(rare) The belief that one is a god.sulam(Hinduism, India, Malaysia, Tamil context) a trident, a trishula; a sacred weapon used by Hindu deities.sulazepam(pharmacology) A benzodiazepine drug, the thioamide derivative of diazepam.sulbactam(pharmacology) A beta-lactamase inhibitor that is usually administered in the form of its sodium salt C₈H₁₀NNaO₅S in combination with a beta-lactam antibiotic (as ampicillin).sulciformHaving the form of a sulcus.sulfamethoprim(medicine) An antiinfective agent used to treat and prevent urinary tract infectionssulfeniumSynonym of sulfenylium.sulfenylium(chemistry) any univalent cation of general formula RS⁺ (where R is not H)sulfiramAn ectoparasiticide used in the treatment and prevention of scabies.sulfoform(organic chemistry) Any sulfated epitope of α-glucosaminesulfonium(inorganic chemistry) the univalent H₃S⁺ cation, derived from sulfanesulfoxonium(organic chemistry) Any cation of the form R₃S⁺=OsulfuretumAlternative spelling of sulphuretum.sulmethoprimMisspelling of sulfamethoprim.sulopenemA beta-lactam antibiotic.sulphenyliumAlternative form of sulfenylium.sulphoniumAlternative spelling of sulfonium.sulphuretumAn ecosystem in which bacteria convert sulfur into different chemical forms (sulfate, sulfide etc.), often in a cyclic manner.sulphuricum(obsolete, organic chemistry) sulphuric acid, oil of vitriolsultam(chemistry) a cyclic sulfonamide in which the S-N bond is part of the ringsultanism(political science) An extreme form of authoritarian government characterized by the personal presence of the ruler in all elements of governance.sumA quantity obtained by addition or aggregation.summObsolete form of sum.summerbeamSynonym of summer.sunbeamAny of various lycaenid butterflies of the genus Curetis.sunbloom(rare, nonstandard) Synonym of sunflower.sungemSynonym of horned sungem.sunroomA room used for its abundant sunlight, especially one in a residence with numerous large glass windows.superagonismThe condition of being a superagonistsuperatom(physics, chemistry) A metamaterial, a cluster of atoms which acts like a single atom. It seems to exhibit some of the properties of elemental atoms.superbeam(rare) A very large or powerful beam (in any sense).superbloomAn explosion of wildflowers that surpasses usual spring blooms.supercapitalismAny especially intense and competitive form of capitalism.supercilium(anatomy, rare) The eyebrow (arch of hair above each eye).supercontinuum(physics) light having both high spatial coherence and broad spectral bandwidth; i.e. laser light that is not monochromaticsuperdeterminism(physics, quantum mechanics) A form of determinism that precludes the assumption, made by Bell's theorem, that an experimenter can make measurements that are independent of each other and of any hidden variables.superdiagram(physics) A supersymmetric diagramsuperequilibriumThe condition of a system in which the value of a parameter is greater than the equilibrium valuesuperfandomThe state or condition of being a superfan; extremely strong fandom.superfarmA large commercial farm, as opposed to the traditional smaller farms owned by families.superfascismExtreme fascism.superferromagnetism(physics) A form of superparamagnetismsuperficialismsuperficialitysuperfirmAn especially large and successful firm (business concern).superherodom(informal) The realm of superheroes.superheroismThe state of being a superhero.superindividualismExtreme individualismsuperkingdom(taxonomy) domainsuperlogarithm(mathematics) One of the two inverse functions of tetration.supermajoritarianismA form of democracy in which decisions must be made by a supermajority of the whole group.supermaximA maxim consisting of several submaxims.supermodeldomThe realm of supermodels.supermodernism(architecture) An architectural style following modernism and postmodernism, promoted by Hans Ibelings.supermom(US, informal) A mother who looks after her home and children whilst being in full-time employment.supermomentum(physics) the conserved charges associated with BMS supertranslations at null infinitysupermum(British) Alternative spelling of supermom.supernaculumTo the last drop, to the bottom.supernationalismSupport for a sociopolitical collective of many nations.supernaturalismThe quality or condition of being supernatural.superorganicism(philosophy) The belief that a culture or society transcends the purely organic nature of its individuals.superorganism(biology) A social colony of individuals who, through division of labour, effective communication and self-organization, form a highly connected community that functions as if it were a single organism.superorgasmA remarkably exciting and pleasurable experience akin to orgasm.superoseptum(anatomy) The upper cardiac septumsuperparamagnetism(physics) paramagnetism that occurs below the Curie temperature or the Néel temperaturesuperparasitismA form of parasitism in which the host (typically an insect larva such as a caterpillar) is attacked more than once by a single species of parasitoid.superpatriotismExtreme patriotism.superphylum(taxonomy) A taxonomic category above phylum and below subkingdomsuperpowerdomThe state or condition of a superpower.superpremiumOf greatly superior quality, beyond premium.superprogramA program made up of subprograms.superrealismArt intended to portray reality as accurately as possible.superregnum(biology, taxonomy) A rank in the classification of organisms: a superkingdom or domain.supersensualismThe condition of being supersensualsupersessionism(Christianity) The belief not merely that Judaism has been supplanted by Christianity, but that the covenant between God and Israel as His chosen people has been abrogated.supersperm(informal) Sperm that is extremely effective at getting a woman pregnant.superstardomThe status or position of a superstar.superstormA major storm (weather phenomenon).superstratum(geology) A stratum that is on top of anothersuperswarmA very large swarm.supersystemA system comprising several subsystems.superteamAny well-respected or highly successful team (in any of several contexts)supertransform(mathematics) The transform of a supermeasure.supervaluationism(logic) A semantics for dealing with irreferential singular terms and vagueness.superwormThe larva of the beetle Zophobas atratus, common in the pet industry as a food source for reptiles, amphibians, etc.superzoom(photography) A very high-magnification zoom feature.suppedaneuma foot-support for a crucified person, projecting from the base of the crosssuppositum(logic) Something supposed to be true; an assumptionsuppressionismA policy of suppressing something.supracleithrum(ichthyology, zoology) A bone of the pectoral girdle situated dorsal to the cleithrumsuprailium(anatomy) The cartilaginous cap at the sacral end of the ilium in humans, and some animals.supralapsarianism(theology) A doctrine held by certain Calvinists that God predestined the fall of man.supramaximumAlternative form of supramaximal.supranationalismSupport for a sociopolitical collective of many nations.supranaturalismsupernaturalismsupraorganism(biology, ecology) A system of multiple organisms that may be considered a single organism, such as an insect colony, or an organism with endosymbionts.supreamObsolete spelling of supreme.supremacismThe belief that a certain group of people are far more superior compared to anyone else, such as those who belong to it are entitled to dominate, control, or rule those who do not. The supposed superior people can also be defined by age, gender, race, ethnicity, religion, sexuality, language, social class, ideology, nation, culture, or belonging to any other part of a particular population.suprematismAlternative letter-case form of Suprematism.supremum(set theory) (real analysis): Given a subset X of R, the smallest real number that is ≥ every element of X; (order theory): given a subset X of a partially ordered set P (with partial order ≤), the least element y of P such that every element of X is ≤ y.surdimutism(dated, rare) Synonym of deafmutism.surfacismSuperficiality.surform(sometimes attributive) A tool with which one grates, rasps, planes, or shaves material, especially wood, to form its surface.surrealism(informal, art) Art with a surreal aesthetic or narrative, regardless of whether or not it is linked to the surrealist movement.surrenderismA policy of surrendering.surrogatum(Scots law) A thing put in the place of another; a substitute.survivalismA belief, expressed by survivalists, in being prepared to survive disasters and cataclysms including the collapse of civilization; the practice of preparing for such events.suspensorium(anatomy) Anything that suspends or holds up a part, especially the mandibular suspensorium, a series of bones or cartilages connecting the base of the lower jaw with the skull in most vertebrates below mammalssustentaculum(anatomy, zoology) A supporting structure, a body part that supports one or more other parts.sutteeism(archaic, Hinduism) suttee; the practice of self-immolation of Hindu widows.suxamethonium(pharmacology) Synonym of suxamethonium chloride.suxethonium(pharmacology) A muscle relaxant drug.swadeshism(India) Synonym of swadeshi.swamsimple past of swimswarajismSupport for swaraj.swarmA large number of insects, especially when in motion or (for bees) migrating to a new colony.sweam(dialectal) A swimming of the head; a fainting fit; a swoon.sweem(UK dialectal) To swoon, faint; be giddy.sweepdomThe realm or sphere of chimney sweeps.sweetgumAlternative form of sweet gum.sweetheartdomThe state of being a sweetheart or lover.swelldom(dated, humorous) High-class people; the class of swells, collectively.swim(intransitive) To move through the water, without touching the bottom; to propel oneself in water by natural means.swindledomThe realm or sphere of swindlers.swingarm(motorcycling) The main component of the rear suspension of most modern motorcycles and ATVs; holds the rear axle in place while swinging vertically to allow the suspension to absorb the shock from bumps in the road.switchroom(telecommunications) A room, often an entire floor, containing switching equipment, especially for telephone lines.swumpast participle of swimsybarismAlternative form of sybaritism.sybaritismluxury, wantonness, voluptuousness, or hedonismsyconium(botany) A collective fleshy fruit, in which the ovaries are hidden within a hollow receptacle, as in the fig; a hollow ball with a stalk at one end and an opening (ostiole) at the other, with flowers or fruits on the insidesycophantismSycophantic behaviour.syllabariumHistorical form of syllabary.syllabism(linguistics) The expression of the sounds of a language by syllables, rather than by an alphabet or by signs for words.syllabogramA symbol that represents a syllable.syllectogramThe graphical output of syllectometrysyllogism(logic) An argument whose conclusion is supported by two premises, of which one contains the term that is the predicate of the conclusion, and the other contains the term that is the subject of the conclusion; common to both premises is a term that is excluded from the conclusion.sylvanium(obsolete) telluriumsymbionticismThe property of being a symbiont.symbiontism(biology) The condition of being symbionticsymbiosismA Darwinian philosophy about the mind and humankind's place in nature, which regards language as a memetic organism residing in the brain.symbolgramAn individual emblem devised by a member of the Camp Fire organization, representing their personality and aspirations.symbolicismAn approach to understanding human cognition that is committed to language like symbolic processing as the best method of explanation.symbolismRepresentation of a concept through symbols or underlying meanings of objects or qualities.symbolofideism(theology) The doctrine that religion is essentially symbolic and should be based on faith rather than reasoned belief.symmetallismA currency system based on the value of a fixed proportion of two metals.symmetrismA belief in or preference for the symmetry of parts, social roles, etc.symmoriiformAny extinct cartilaginous fish of the class Symmoriiformessympatheticism(dated, rare) The trait of showing excessive sympathy.sympathism(psychology) The habit of positioning oneself as a victim or martyr so as to elicit sympathy from others.symphalangismA congenital stiffness of the phalangessymphilism(entomology) The property of being a symphile.symphonismA musical composition in a symphonic style.symphytism(linguistics, archaic) coalescence; compounding of two words.symplasm(biology) The cytoplasm of a symplastsymplectomorphism(mathematics) An isomorphism of a symplectic manifold; a diffeomorphism which preserves symplectic structure.sympodium(botany) A pattern of branching, similar to dichotomous branching, where the axis or stem is morphologically made up of a series of superposed branches imitating a simple stem.symposiumA conference or other meeting for discussion of a topic, especially one in which the participants make presentations.symptom(figuratively) A signal; anything that indicates, or is characteristic of, the presence of something else, especially of something undesirable.synanagram(linguistics) An anagram that is also a synonym (or near-synonym); a synonymous anagram.synanagrammatismThe creation or formation of synanagrams.synandrium(botany) An androecium of which the anthers have been fused.synangium(anatomy) The divided part beyond the pylangium in the aortic trunk of the amphibian heart.synanthropism(biology) The condition of being synanthropicsynapticulumSynonym of synapticula.synaptiformHaving the form of, or in the manner of a synapsesynaptogramA graphical representation of synapses obtained by labelling synapsinsynarchismA policy that favours synarchy.synaxariumAlternative form of synaxarion.synbranchiformAny swamp eel of the order Synbranchiformessyncarpium(botany) A syncarp.synchrogramA graphical representation of the synchronisation of two oscillating systemssynchromysticismThe drawing of connections in modern culture (movies, music lyrics, historical happenings and esoteric knowledge); and finding connections that could be coming from the "collective unconscious mind"; and finding connections between occult knowledge (i.e. esoteric fraternities, cults and secret rituals), politics and mass media.synchronismThe state of being synchronous.syncitiumMisspelling of syncytium.synclinorium(geology) A large syncline with superimposed smaller folds.syncraticismMisspelling of syncretism.syncreticismAlternative form of syncretism.syncretism(linguistics) The fusion of different inflexional forms.syncytium(biology) A mass of cytoplasm containing many nuclei; a multinucleate cell resulting from cell fusions of mononuclear cells (for example, the cells that make up animal skeletal muscle).syndactylismSynonym of syndactyly.syndicalism(socialism) Control of both industry and government by labor unions, especially as achieved through revolutionary direct action; advocacy for attempts to bring it about.synecdochismThe use of synecdoche.synechism(philosophy) The tendency to regard things such as space, time, and law as continuous.synecism(rare) Alternative spelling of synoecism.synedriumAlternative form of synedrion.syneisaktism(historical, religion, Christianity) The practice, from early Christian until mediaeval times, of a man and woman living together in a non-legalised relationship while observing vows of chastity.synergismThe theological doctrine that salvation is brought about by a combination of human will and divine gracesynform(geology) A topographic feature which is composed of sedimentary layers in a concave formation, but may not actually form a real syncline (i.e., the youngest rocks may not be exposed in the middle).syngnathiform(zoology) Any fish of the order Syngnathiformes.synhymenium(zoology) A hypostomial frange.synisonym(taxonomy, rare) Any of a set of names that share a basionym.synoecism(Ancient Greece) The unification of towns, tribes etc. under one capital city or polis.synonym(semantics) A term (word or phrase) which is synonymous with others.synonymum(non-native speakers' English) Synonym.synorchidismSynonym of synorchism.synorchismUnion or fusion of the testes.synovium(anatomy) Alternative form of synovial membrane.synsacrum(anatomy, ornithology) The bone in birds composed of the sacrum and some lumbar or caudal vertebrae fused together.syntacticism(linguistics) An approach that focuses on syntax.syntactocentrism(linguistics) A focus on the role of syntax in language.syntagm(linguistics) Alternative form of syntagma.synthesismsynthesis anarchismsyntheticismThe principles of synthesis; a synthetic system.synthetism(medicine, obsolete) The complete treatment of a fracture, restoring the parts to their proper place and holding them there.syphiloderm(archaic, medicine) syphilid.systemA group or set of related things that operate together as a complex whole.systematismThe reduction of facts or principles to a system.systrumObsolete form of sistrum.