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sacellumA small chapel, as a monument within a church.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.saferoomAlternative form of safe room.sagopalmAlternative spelling of sago palm.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.saintismThe character or quality of saints.saleroomA room in which items for sale are displayed; a showroomsamariumA 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.sandworm(British) A lugworm, of species Arenicola marina.santalum(botany) Any of the genus Santalum of trees with entire opposite leaves and small apetalous flowers.santorum(neologism, sex, slang) A frothy mixture of lubricant and fecal matter as an occasional byproduct of anal sex.sapphismLesbianism; female homosexuality.satanismAlternative letter-case form of Satanism.satirismA satirical approach or outlook.satyrismAn extremely high or excessive libido in men or boys.savagismThe state of being savage; wildness; lack of civility.savescum(intransitive, video games, often derogatory) To reload the last saved game whenever the player character dies or an unfavorable outcome has been encountered.scalenum(obsolete, of a triangle) Scalene.scalprumA toothed raspatory used in trephining and in removing carious bone.scandiumA metallic chemical element, atomic number 21, obtained from some uranium ores; it is a transition element.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.scheliumAlternative form of scheelium.schellumAlternative form of schelm (“a villain or scoundrel”).scholium(linguistics) A note added to a text as an explanation, criticism or commentary.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.scoutdomThe realm or sphere of scouts.scribismThe character and opinions of a Jewish scribe in the time of Jesus Christ.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.scybalumA manually palpable lump of stool in the intestines, associated with constipation.seabreamAny of several species of marine fish of the families Sparidae or Bramidae found in shallow temperate and tropical waters around the world.seastormA thunderstorm, waterspout, tropical storm, or other storm over an ocean.seatworm(UK, Australia, India) Strongyloides stercoralissecretumA special seal used for private correspondence.secundum(formal) according tosediliumA seat in the chancel of a church near the altar, for the officiating clergyman.seismismseismic activityseleniumA nonmetallic chemical element (symbol Se) with an atomic number of 34, used mainly in glassmaking and pigments and as a semiconductor.selfharmAlternative form of self-harm.semagramA semantic symbol (picture or glyph) associated with a concept.semifirmSomewhat firm.semiformA partial or imperfect form.seminism(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.seminormAlternative spelling of semi-norm.senilism(medicine, gerontology) Premature old age.sensuism(epistemology, archaic) sensualismseptulum(zoology, anatomy, botany) A little septum; a division between small cavities or parts.serapeum(historical) A temple or other religious institution dedicated to the syncretic Greco-Egyptian deity Serapis.seraphimplural of seraphseriatimOne after another, in order; taking one topic or subject at a time in an order; sequentially.seriatum(uncommon) a series, a sequencesetiformHaving the shape or structure of bristles.sexagesm(mathematics, obsolete) Synonym of sexagesimal: a sixtieth part of something.shadeismAlternative form of shadism.shaikdomAlternative spelling of sheikdom.shakycam(film, television) A style of filming using a handheld camera, giving an on-screen effect of shakiness.sharkdomThe state of being a shark, or of belonging to the world of sharks; sharks, collectively.sheepdomThe quality or state of being a sheep.sheeshamAlternative form of shisham.sheikdomThe domain ruled by a sheik.shekalimplural of shekelsheltrumAlternative form of sheltron.sheqalimplural of sheqelshinbeamAlternative form of shinbin.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.shloshimAlternative form of sheloshim.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.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.showroomA room in a business set aside for the display of the company's products.sickroomA room to be used by someone who is ill.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.).sierozemA kind of brownish-grey desert soil.sigillum(law, historical) A sealsilambamA weapon-based Indian martial art.silicium(obsolete) The chemical element silicon.silkwormAny of various caterpillars of moths that produce silk cocoons, especially Bombyx mori, the source of most commercial silk.silphium(historical) A plant, thought to be extinct, used in Ancient Greece and Ancient Rome in cooking and as a contraceptive.silundumA hard form of silicon carbide with high electrical resistance.silyliumAny cation formed by a silicon atom with three bonds, having the general formula R₃Si⁺simplismThe trait of oversimplifying things by ignoring complexity and complications.simulism(rare, formal) A tendency to be similar; resemblance.sinapismA mustard plaster.singlismDiscrimination against and negative perception of single people and singlehood.sinkroom(historical) A room containing a sink for washing things; a scullery.sinogram(linguistics) Any character used in Chinese writing.sirohaemAlternative spelling of siroheme.sissyismThe quality of being a sissy.skiagramA picture or image created from shadows, especially with X-rays.slackcom(UK) A sitcom which revolves around a slacker or slackers.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.slavedomA region or realm where slavery exists.slenthemA Javanese metallophone.slipform(countable) A moveable form used when setting concrete using the slipform technique.slobbismSlobbish behaviour; slovenliness.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.slummismAlternative form of slumism.snakedomThe state or essence of being a snake.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.snorgasmAlternative form of snoregasm.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.solidism(medicine, obsolete) The doctrine that the solid parts of the body are the only parts that have vital properties and are susceptible to diseasesoliformLike the sun in appearance or nature.somatism(uncountable) Somatist beliefs generally.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).sonogramClipping of ultrasonogram: A medical image produced by an ultrasound echo.sopherimplural of sophersoralium(botany) A cluster of sorediasoredium(lichenology) A common scalelike reproductive structure in lichens consisting of algal cells enveloped in a network of hyphae.spanwormA measuring worm or inchworm (Lepidoptera, Geometridae)speciesmAlternative form of speciesism.spectrumA range; a continuous, infinite, one-dimensional set, possibly bounded by extremes.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.spermismThe belief, held by spermists, that the male sperm holds the whole germ of the future animal.sphagnumAny of various widely distributed mosses, of genus Sphagnum, which slowly decompose to form peat.spherium(physics, mathematics) A model of a form of atom composed of two electrons restricted to the surface of a sphere.spicatum(masonry) Ellipsis of opus spicatum.spiculumA thrusting javelin used by Romans that replaced the pilum in the late 3rd century.spinfoamAlternative spelling of spin foam.spinonymA type of ambigram in which a word is written using the same glyph repeated in different orientations.splenium(anatomy, neurology) The thick posterior part of the corpus callosum of the brain.splitismAlternative form of splittism.spookdom(slang) The realm or sphere of spies.spookism(informal) Spooky or ghostly things; spookery.spotbeamAlternative form of spot beam.squantum(US, Nantucket dialect, possibly dated) A picnic on the beach, a clambake.squawdomThe world or sphere of squaws.stagedomThe theatrical world.stagwormThe larva of Cephenemyia auribarbis, which infests the stag.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.statedomThe state of being a state (a polity).stateismAlternative form of statism.stfandom(dated, fandom slang) The subculture of science fiction fans.stoicismA real or pretended indifference to pleasure or pain; insensibility; impassiveness.strabism(medicine) strabismusstriatum(neuroanatomy) The caudate nucleus and the lentiform nucleus considered as a single structure.studfarmAlternative form of stud farm.stumpcamAlternative form of stump cam.styledomThe fashionable world; the realm or sphere of popular style.subclaimA claim forming part of a larger claim.subforum(Internet) A single message board that is part of an online discussion forum.subilium(anatomy) The lower layer of the iliumsubmaximA maxim making up part of a greater maxim.substorm(astronomy) A phenomenon in which a magnetotail becomes swollen and unstable.subswarmA swarm making up part of a larger swarm.subtotemA secondary or subordinate totem, such as one associated with a specific subtribe.sudarium(archaic or historical) A napkin or handkerchief.sulfiramAn ectoparasiticide used in the treatment and prevention of scabies.sunbloom(rare, nonstandard) Synonym of sunflower.supermom(US, informal) A mother who looks after her home and children whilst being in full-time employment.supermum(British) Alternative spelling of supermom.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.sweepdomThe realm or sphere of chimney sweeps.sweetgumAlternative form of sweet gum.swelldom(dated, humorous) High-class people; the class of swells, collectively.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.sybarismAlternative form of sybaritism.syconium(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 insidesymplasm(biology) The cytoplasm of a symplastsynecism(rare) Alternative spelling of synoecism.synovium(anatomy) Alternative form of synovial membrane.