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All 428 Matching Words

saccharanA form of caramel produced by heating sugar (sucrose)saccharin(chemistry) A white, crystalline powder, C₇H₅NO₃S, used as an artificial sweetener in food products.sacration(rare) A coronation or consecration.sacristanThe person who maintains the sacristy and the sacred objects it contains.safehavenAlternative form of safe haven.safflominAny of a group of yellow glycosides present in safflowersaffraninAlternative form of safranin.saintfoinDated form of sainfoin.salarymanAn employee, a worker; now especially a Japanese white-collar worker who works long hours yet has an insignificant position within the corporate hierarchy.salarymenplural of salarymansalenixon(obsolete) Crude potassium bisulfate.saligenin(organic chemistry) The phenolic alcohol o-hydroxy-benzyl alcohol obtained by the decomposition of salicinsaliretin(organic chemistry) A yellow amorphous resinoid substance obtained by the action of dilute acids on saligenin.salnatroncrude sodium carbonatesaltationA leap, jump or dance.saltspoon(historical) A small spoon used for serving or measuring salt, equivalent to ⅛ teaspoon.salvarsan(medicine) The organoarsenic compound arsphenamine, formerly used in the treatment of syphilis and the first effective antibiotic developed against any bacterial illness.salvation(religion) The process of being saved, the state of having been saved (from hell).salvianinAn anthocyanin pigment found in Salvia.samaritana Good Samaritansandplain(geology) An area whose surface consists of sand deposited from elsewhere by the wind or sea.sandprawnKraussillichirus kraussi, a kind of shrimp.sandragonAlternative form of sangdragon.sandthornA species of sea buckthorn (Hippophae rhamnoides), found from western Europe to northwestern China.sanggenonA chemical compound found in mulberry root bark.sannyasinA Hindu in the sannyasa stage.saphraninMisspelling of safranin.sapogenin(organic chemistry) The steroid constituent of the glycoside saponinsaponarin(organic chemistry) A glucoside found in Saponaria officinalis.sapotoxinA toxic saponin.saralasinAn angiotensin II analogue, a competitive inhibitor of angiotensin II.sarcospan(biochemistry) A transmembrane protein, located within skeletal muscle, the loss of which is associated with muscular dystrophy.sargassan(organic chemistry) A sulfated heteropolysaccharide obtained from a seaweed of the genus Sargassum.sarizotanA drug with antipsychotic effects.sartorianAlternative form of sartorial.saskatoon(Canadian Prairies) A shrub inhabiting western North America (Amelanchier alnifolia).satelloonSynonym of balloon satellite.satiationThe state of being satiated or sated, of being full, of being at maximum capacity.saturnian(poetry) Alternative form of Saturnian.saucerianAn extraterrestrial being visiting the Earth.saucerman(science fiction) Someone who travels in a flying saucer.sauvignonAny of several grape varieties and associated wines originally from FrancesaxatilinA disintegrin present in the venom of the snake Gloydius saxatilissaxitoxinA neurotoxin, produced by some dinoflagellates, associated with red tides, that can accumulate in molluscs and cause subsequent food poisoning in humansscalation(anatomy) An arrangement of scales.scaledownThe act or result of scaling down.scalesmanAlternative form of scaleman.scampsman(dated, slang) highwaymanscanathonAn event at which people digitize a large amount of archival material.scarfskin(archaic) The epidermis, the outermost layer of skin, especially that which forms the cuticle of a nail.schatchenAlternative spelling of shadchen.schlierenRegions of a fluid having different refractive index because of their different density.schneckenplural of schneckeschoinion(historical) A Byzantine unit equal to 20,000 Greek feet or 33⅓ stades.schoolman(historical) A medieval writer, scholar or teacher of the subjects taught at early European universities (such as theology, metaphysics and logic); a scholastic.schoolmenplural of schoolmanschoolrunAlternative form of school run.schwanpanDated form of suanpan.scientianOne who studies science; a scientist.scillarenA particular steroid glycoside.scillitin(chemistry) A bitter principle extracted from the bulbs of the squill (Scilla).scinderin(biochemistry) An actin related to gelsolinsclerogen(botany) The hard matter of some cells in wood, such as the walnut shell.sclerotin(biochemistry) The crosslinked protein component of the cuticles of insects.sconcheon(archaic, architecture) A squinch.sconchion(very rare) Alternative form of scuncheon.scotopsinThe protein component of rhodopsin.screenman(mining, historical) A person employed to screen the coal to remove impurities.screwbeanProsopis pubescens, a flowering shrub or small tree in the pea family, native to the southwestern United States and northern Mexico.screwdownA plastic case, fastened with screws, for storing and displaying a trading card.scrillion(slang, hyperbolic) An unspecified large number (of).scription(obsolete) handwritingscrubdownA thorough scrubbing to clean something from top to bottom.scrubwrenAny of various small, mainly insectivorous passerine birds of genus Sericornis in family Acanthizidae.scrunchinAlternative form of scrunchion.scuncheon(architecture) The portion of a wall exposed by an opening in a wall such as a window or door frame, when the window frame does not conceal the entire width of the wall.scutation(zoology) The number and arrangement of scutes.scutcheonAn escutcheon; an emblazoned shield.scythemanOne who uses a scythe; a mower.scythemenplural of scythemanseadragonAlternative spelling of sea dragon.secessionThe act of seceding.sechsbein(mathematics, physics) Synonym of hexad.seclusionThe act of secluding, shutting out or keeping apart.secondman(rail transport, UK) A driver's assistant on a diesel or electric locomotive.secretion(countable) Any substance that is secreted by an organism.sectarianOf, relating to, or partial to a sect.securitan(obsolete) One who feels secure, but who may in fact not be.sedolisin(biochemistry) Any of a group of peptidases that hydrolyze serine derivatives.seductionThe act of seducing.selamatanAlternative form of slametan.selametanAlternative form of slametan.selectionThe process or act of selecting.selectman(US) Any of a board of municipal officers elected to manage some New England towns.selectmenplural of selectmanselectron(particle physics) A slepton which is the hypothetical supersymmetric partner of an electron.semantronA percussion instrument used chiefly in Eastern Orthodox monasteries to summon the brethren to prayer or to lead processions.semialienSomewhat or partly alien.semicolonThe punctuation mark ;.semihumanAlternative form of semi-human.semiqueen(mathematics) A queen (chess piece) that can only move or attack in one (but not the opposing) directionsemiurbanPartially urban.sempitern(obsolete, poetic) sempiternal; everlastingsenataxin(biochemistry) An RNA / DNA helicasesensationA physical feeling or perception from something that comes into contact with the body; something sensed.sepazolinSynonym of cefazolin.septarian(geology) Containing or relating to septaria.septationThe division of a cavity by means of a partition.serapeionAlternative form of serapeum.serelaxinAn investigational drug for the treatment of acute heart failure, targeting the relaxin receptor.serglycin(biochemistry) An intracellular proteoglycan found in the storage granules of connective tissue mast cellsseriationthe arrangement of things in a seriesserotonin(biochemistry) An indoleamine neurotransmitter, 5-hydroxytryptamine, that is involved in depression, appetite, etc., and is crucial in maintaining a sense of well-being, security, etc.serration(uncountable) The state of being serrated.serricorn(zoology) Having serrated antennae.sesamolinA lignan found in sesame oil.seventeenThe cardinal number occurring after sixteen and before eighteen, represented in Roman numerals as XVII and in Arabic numerals as 17.sexcation(informal) A vacation taken for the purpose of engaging in sexual activity.sexuationSexuality, regarded as a logically coherent attribute of either gender rather than a fixed attribute of each.shabaroon(rare) An unkempt, disreputable person.shabbaton(Judaism) A shabbat-long or weekend-long educational gathering.shacktownA settlement made up of shacks; a shanty town.shadirvanA fountain for ablutions, usually attached to a mosque.shadowban(transitive, Internet, of a search engine) To filter out results without the publisher's knowledge.shaftsmanAlternative form of shaftman.shakedownA trial or test period, especially of a ship or aircraft.shantyman(nautical, music) The sailor who sings the main line of a sea shanty (the other sailors singing the responses or choruses)sharesmanAlternative form of shareman.sharifianOf or relating to a sharif.sharksfin(chiefly attributive) Synonym of shark fin.sharkskinThe skin of a shark; shagreen.shearsmanAlternative form of shearman.sheepskin(uncountable) The skin of a sheep, especially an adult sheep, and especially when used to make parchment or in bookbinding.sheetsman(nautical) someone who controls the trim of the sails.shelfwornAlternative form of shelf-worn.shelterin(biochemistry) A complex of proteins associated with telomeres that protect the ends of chromosomesshematrin(biochemistry) Any of a family of structural proteins found in the shells of some oysters.shengyuan(historical) In ancient China, a scholar who has passed the entry-level examination to study at a college.shetadlanAlternative form of shtadlan.shieldmansomeone who carries a shieldshintiyanA kind of wide loose drawers or trousers worn by women in Muslim countries.shiretownAlternative spelling of shire town.shitbrain(slang, vulgar, offensive or derogatory) A stupid person.shitstainAlternative form of shit stain.shootdownThe shooting down of an aircraft, satellite, etc.shopwomanA woman employed in a shop.shopwomenplural of shopwomanshoresmanAlternative form of shoreman.shortgown(obsolete) A woman's bedgown consisting of a loose jacket with a skirt.shorthornDescribing cattle that have distinctively short horns.shoutdownAn event when someone shouts down (shouts louder than) someone in order to force through an argument or point of view.shovelmanOne who works with a shovel.showwomanA female showperson, especially one with a central role.shubunkinA Japanese variety of goldfishshugoshin(biochemistry) Any of a family of proteins that play a role in the centromeric protection of cohesinsialation(organic chemistry) Reaction with a sialatesiccationThe act or process of drying.sicklemanSomeone who uses a sickle; a reaper.siclatounAlternative form of ciclatoun.sideblownOf an instrument, that is blown on the side, rather than at the end.sidechainAlternative form of side chain.sidewomanA female sideman.sieboldinA particular steroid glycoside.sightseenpast participle of sightseesightsman(dated, music) A sight-reader.sightsmenplural of sightsmansigmation(grammar) The process of sigmating; addition of a sigma.sigmoidinAny of a class of flavanones found in Erythrina sigmoidea.signalmanSomebody employed to operate the signals and points of a railway.signation(obsolete) A sign given, especially of a crosssigogglin(US, Appalachia, dated) Not built correctly; crooked, skewed, or out of balance.silacidin(biochemistry) A highly-phosphorylated protein that is involved in biomineralizationsilibinin(biochemistry) The major active constituent of silymarin, believed to possess hepatoprotective properties.silkmapinA protein found in Hyriopsis cumingii and involved in nacre formation.silkwomanA female dealer in silk.silodosin(pharmacology) A drug for the symptomatic treatment of benign prostatic hyperplasia.siltationThe (typically undesirable) increase in concentration and or of deposition of water-borne silt in a body of water.siluridan(obsolete) silurid.silverfin(zoology) A small North American freshwater cyprinoid fish (Notropis whipplei, now Cyprinella whipplei).silvermanA butler responsible for the silverware.silyationReaction or treatment with siliconsilymarin(biochemistry) A mixture of flavonolignans extracted from the blessed milk thistle (Silybum marianum), used as a source of silibinin.similacinSynonym of sarsaparillin.simpleton(informal, derogatory) A simple-minded person lacking common sense.simvastinSynonym of simvastatin.sinapisin(organic chemistry, obsolete) A substance extracted from mustard seed, probably identical with sinalbin.sinarapanMistichthys luzonensis the smallest commercially-harvested food fish endemic to Bicol Region, PhilippinessindhenanThe improvisational singing of Javanese gamelan music.sinesetinA polymethoxylated flavone found in citrus fruit.singleton(playing cards) A playing card that is the only one of its suit in a hand, especially at bridge.sinistrin(organic chemistry) A slimy polysaccharide extracted from squill.sinuationThe act of sinuating, or property of being sinuous.siphonein(organic chemistry) A particular carotenoid.sisomicin(pharmacology) An aminoglycoside antibiotic, (2R,3R,4R,5R)-2-{[(1S,2S,3R,4S,6R)-4,6-diamino-3-{[(2S,3R)-3-amino-6-(aminomethyl)-3,4-dihydro-2H-pyran-2-yl]oxy}-2-hydroxycyclohexyl]oxy}-5-methyl-4-(methylamino)oxane-3,5-diol.sisterkin(dated) Fond term of address for one's sister.situationThe combination of circumstances at a given moment; a state of affairs.sizofiranA beta-glucan polysaccharide.skhoinionAlternative form of schoinion.skiathlonA skiing event which combines skate skiing and classic skiing, usually so that half of the total distance is covered with each technique.skimeltonA raucous gathering outside the home of newlyweds; a skimmington, a shivaree.skipathonA charity event in which participants jump rope.skymaiden(mythology) A young woman who comes from the sky.slammakinObsolete form of slammerkin.slavebornborn in slaveryslebogganA device for steering toboggans.slinkskinThe skin of an animal born prematurely, or leather made from it.smackdownA physical or emotional confrontation; a battle, a fight; also, a bitter rivalry.smacksmanA man who sails a fishing-smack.smalltownAlternative form of small-town.smectogen(chemistry) Any smectic mesogen.smitilbin(organic chemistry) A particular flavanonol found in sarsaparilla.snakeskinThe skin of a snakesneaksman(obsolete) A thief who operates by stealth.sneckdown(neologism) A natural neckdown (curb extension) caused by snowfall.snoezelencontrolled multisensory stimulation, a type of therapysnogathon(UK, slang) A prolonged period of kissing.snoutbeanAny of various plants in the genus Rhynchosia.snowwomanA female version of a snowman, i.e. having female characteristicssociation(botany) A plant community.sodiation(inorganic chemistry) The replacement of metal ions (typically lithium) with those of sodiumsoftgrain(of bread) Composed of white flour with kibbled grains added for extra texture.solenodonAny of the family Solenodontidae of small nocturnal, burrowing, insectivorous mammals, with a long snout and venomous saliva.solvation(chemistry) An association, or a reaction, of a solute with a solvent.sooterkinA mouse-like creature which, according to folklore, Dutch women who sit over stoves give birth to.soricidinA paralytic oligopeptide present in the saliva of some shrews of the family Soricidaesortation(uncountable) The use of any process of sorting.sortitionSelection by drawing lots.soupspoon(cooking) A soupspoonful.souverain(historical) A gold coin of several former polities of the Netherlands.soveraignObsolete form of sovereign.sovereignExercising power of rule.soystatin(biochemistry) A soya protein that lowers blood cholesterolspadassina fighter, duelist.spadesmanA man who uses a spade or shovel.spaewomanA female prophet or diviner.spasmogen(pharmacology) A substance which induces spasms.spastizin(biochemistry) A protein, characteristic of spastic paraplegia, that mediates autophagic lysosome reformationspatacsinA protein encoded in humans by the SPG11 gene, of uncertain function.spearsmanAlternative form of spearman.spelldownA type of spelling bee in which participants sit down as they are eliminated.spellicanAlternative form of spillikin.spermatin(archaic, biochemistry) A substance allied to alkali albumin and to mucin, present in semen, to which it is said to impart the mucilaginous character.sphaleron(physics) The particle-like solution to an electroweak field equation.sphericon(geometry) A solid constructed by slicing a bicone with 90-degree apices through a plane containing both of them, rotating one half by 90 degrees, and reconnecting them; the resulting shape has a single continuous face, and two edges.spherulin(medicine) An antigen, is derived from the fungus Coccidioides, used as coccidioidin.sphingianAlternative form of sphinxian.sphinxianOf or relating to the mythological sphinx.spiderman(informal) A steeplejack.spikehornA deer whose antlers do not branch.spillikenAlternative form of spilikin.spillikinOne of the straws (or small pieces of wood, ivory, etc.) used in the game of jackstraws or spillikins.spinathon(slang, rare) A long period of spinning.spination(zoology) The distribution of spines on an organism.spinniken(UK, obsolete, slang) A workhouse.spintrianOf or pertaining to sex or fornication (especially homosexual) between three or more people.spiralian(zoology) Any animal belonging to the superphylum Spiralia, known for their spiral cleavage pattern.spiration(theology) The procession of the Holy Ghost.spiritmanAlternative form of spirit man.spirostan(organic chemistry) The steroid 16,22:22,26-diepoxycholestane or any of its derivativesspirurian(zoology) Belonging to the nematode subclass Spiruria.spleuchan(archaic, Scotland) A pouch, especially for tobacco or money.spleughanAlternative form of spleuchan.spoileron(aviation) A spoiler panel which is extended on one wing of an aircraft in order to decrease the lift and increase the drag generated by said wing, rolling and yawing the aircraft towards that wing.spoilsman(US) A politician who serves only for a share of the spoils.spokesmanOne who speaks as the voice of another person or a group of people.spokesmenplural of spokesmanspooldown(aviation) The process of reduction of the rotational speed of a turbine engine, causing a reduction in thrust.sporangin(biochemistry) An enzyme associated with the development and release of sporangiasporozoanAny of many parasitic protozoans, of the class Sporozoa, that reproduce alternately sexually and asexually via spores; they are responsible for diseases such as malariasporozoonObsolete form of sporozoan.sportsman(UK) A man who engages in sports; an athlete.sportsmenplural of sportsmanspositron(physics) The supersymmetric partner of a positron.spotcleanAlternative form of spot-clean.sputationThe act of spitting; expectoration.sputcheon(chiefly historical) The metal lining of a scabbard's mouth.squalodon(paleontology) Any of a genus of extinct whales with serrated teeth, belonging to the family Squalodontidae.squamosin(organic chemistry) An acetogenin found in Annona squamosa.squareman(UK) A stonecutter.squillion(slang, used hyperbolically) A very large, unspecified number (of).stablemanA person employed to take care of horses in a stable.stablemenplural of stablemanstacationAlternative spelling of staycation.staithman(UK) A man employed in weighing and shipping at a staith.stakeswin(horse racing) A win at a stakes racestanchionA vertical pole, post, or support.standdownAlternative spelling of stand-down.staplegunAlternative form of staple gun.starbolinAlternative form of starbowline.staredown(idiomatic) A confrontation in which each party waits for the other to yield.stargazin(biochemistry) A brain-specific transmembrane protein associated with a form of epilepsystasidionSynonym of kathisma (“a hinged seat used in monastic churches”).statesmanA man who is a leader in national or international affairs.statesmenplural of statesmanstatherin(biochemistry) A protein that prevents the precipitation of calcium phosphate in saliva, leaving it available for remineralisation of tooth enamelstavesmanAn official bearing a stave or wand.stealthen(transitive, rare) To add stealth to; make stealthystearsmanObsolete form of steersman.steersman(nautical) One who steers a ship or other vessel; the helmsman.steersmenplural of steersmansteinkernA fossil formed from sediment that filled a hollow structure such as a shell.stentorin(organic chemistry) A blue or green pigment found in some stentors (the protozoans). It is a photoreceptorstepbairn(UK dialectal, chiefly Scotland, otherwise obsolete) A stepchild.steproninA particular mucolytic.steradian(geometry) In the International System of Units, the derived unit of solid angle; the solid angle subtended at the centre of a sphere of radius r by a portion of the surface of the sphere that has area r². Symbol: srstercolin(biochemistry, archaic) serolin; stercorinstercorin(biochemistry) serolinstereogen(chemistry) A stereogenic grouping within a molecule; a stereoelement.stewartanAn extracellular polymeric substance found in Pantoea stewartii subsp. stewartii.stibarsen(mineralogy) A trigonal-hexagonal scalenohedral mineral containing antimony and arsenic.stibatian(mineralogy) antimonatianstibophenAn anthelmintic that inhibits phosphofructokinase and is used to treat schistosomiasis.sticheronA hymn, often written in cycles and sung in alternation with psalm verses, used in the Orthodox Church and those Eastern Catholic Churches which follow the Byzantine Rite.sticksman(rare) A male drummer.sticktionthe temporary adhesion between a tribometer and a test surface that causes unrealistically high slip resistance readingsstinkhornAny fungus of the order Phallales, which produce a foul-scented, rod-shaped mushroom.stockhorn(music) An old musical instrument, the pibgorn.stopcodonAlternative form of stop codon.storesmanSynonym of storeman.stramazonAlternative form of stramazoun.strapdown(aviation) An inertial navigation system that eliminates the gimbal in favour of a lightweight digital computer having sensors that are simply strapped to the vehicle.stratifin(biochemistry) A protein found in stratified keratinizing epithelial cells.streedhanAlternative form of stridhana.striationThe action of marking with a stria.strictionThe act of constricting, or the state of being constricted.stripdownThe disassembly of a mechanical system into its separate components.striploin(US, Canada) beef tenderloinstrokeman(rowing) The stroke; the rower closest to the stern of the boat.stromalin(genetics) A subunit of the cohesin ring complex which encircles sister chromatids after DNA replicationstrongmanA man who performs feats of strength, as in competitions or as an attraction in a circus.strongmenplural of strongmanstrontian(mineralogy) Containing strontium.struthianof, pertaining to, or resembling an ostrichstrychninObsolete form of strychnine.stubbournMisspelling of stubborn.suasorian(obsolete, rare) Synonym of suasory.subactionAn action that makes up part of a more complex action.subalternOf a lower rank or position; inferior or secondary; especially (military) ranking as a junior officer, below the rank of captain.subamnionBeneath the amnionsubandeanBeneath the AndessubarcminAbbreviation of subarcminute.subcolumnA column making up part of a larger column or supercolumn.subdeacon(Catholicism, chiefly historical) A Catholic clerical rank in the major orders below that of a deacon.subdesignA subset of a designsubdomainA domain or sphere that is part of a larger domain or sphere.sublancinA particular bacteriocin produced by the bacterium Bacillus subtilis.sublationRemoval, taking away.sublegion(taxonomy, military) A subdivision of a legion.submargin(entomology) An area parallel to a margin but slightly further in.submedian(zoology) Next to the median (on either side).submicron(physics) Smaller than micron-scalesubnationA subordinate or secondary nation.subniveanOccurring beneath a layer of snow; subnival.subnivianRelating to or characteristic of a subnivium; subniveal.subolesin(biochemistry) A protein, present in ticks of the genus Ixodes, that confers immunity to some pathogens.suboperon(genetics) A constituent part of an operonsuboption(chiefly computing) A secondary option available as part of a main option.subprisonA small-scale prison that is run by the authorities of a larger prison.subreasonA subsidiary reason.subregionA region that is part of a larger region.subscreenA subsidiary screen making up part of a larger screen (especially the kind used for displaying computer output).substrain(biology) A subset of a strain, especially one derived from a single cellsubtendon(anatomy) One of the branches of a tendon that splits into multiple parts.subtopianOf or pertaining to subtopia.suburbianA person from the suburbs.subvirionAn incomplete or broken virionsubwardenA subordinate warden, a lower-ranking warden.subweapon(video games) A secondary weapon.succatoon(obsolete) A kind of cotton cloth from India.suctorianA protist of the subclass Suctoria in the class Phyllopharyngea; a predatory sessile ciliate.suffixionThe process of adding a suffix to something.suffosionA geological process by which subsidence sinkholes or dolines are formed.suffraganA bishop seen in relation to his archbishop or metropolitan province (which may summon him for support, to attend synods etc.).suffusion(countable) The act of pouring a liquid over or soaking something.sulcationA channel or furrow.sulfatian(mineralogy) Containing sulfate anions.sulfation(chemistry) The replacement of a hydrogen atom of an organic compound with a sulfate (-OSO₂OH) functional group, or the replacement of the hydrogen atoms of two molecules to form a sulfate (R-OSO₂O-R)sulfitian(mineralogy) Containing sulfite anions.sulfurian(mineralogy) Containing sulfur atoms (in place of another element).sulisatinA laxative drug.sultropenA particular fungicide.summationSummarization; summary; summing up.sunbeatenHeated by exposure to direct sunlight.sundryman(dated) A dealer in sundries, or miscellaneous products.sundrymenplural of sundrymansunscreen(transitive) To apply sunscreen to (someone).supermoon(astrology, astronomy) A full moon or new moon, when the Earth–Moon distance is in the lowest tenth of its range.supersign(semiotics) A higher-level sign.superspin(physics) The spin of a superconducting particle, wave etc.supinanin(organic chemistry) A particular ellagitannin.surfactinA bacterial cyclic lipopeptide that is a powerful surfactant, sometimes used as an antibiotic.surfatronAn electron accelerator that works on the principle of plasma acceleration.surfusion(archaic) supercoolingsurgation(archaic) An erect penis; an erection.surrejoinTo reply with or in a surrejoinder.susotoxin(organic chemistry, obsolete) A toxic basic substance obtained from cultures of the swine fever bacillus.suspicionThe act of suspecting something or someone, especially of something wrong.suspitionObsolete form of suspicion.swagwoman(Australia, New Zealand, historical) A woman who travels around with a swag (“bundle of personal items”).swansdownThe down of a swan.sweetcornAlternative form of sweet corn.swertisin(biochemistry) A particular flavonoid.swimathonAn event during which people swim in order to raise money for charity.switchman(rail transport) A person who operates railway switches that route trains onto rail tracks.switchmenplural of switchmanswollenin(biochemistry) A protein, in fungi of the genus Trichoderma, that is similar to the expansins found in plantsswordfernAlternative form of sword fern.swordsmanA person skilled at using swords in sport or combat; a fencer.swordsmenplural of swordsmansymbionin(biochemistry) An aphid endosymbiont-specific chaperonin proteinsymmedian(geometry) Any of three lines associated with every triangle, constructed by taking a median of the triangle (a line connecting a vertex with the midpoint of the opposite side) and reflecting the line over the corresponding angle bisector (the line through the same vertex that divides the angle there in half).symmetron(physics) A scalar field associated with dark mattersympathinAny substance (such as adrenaline) released from sympathetic nerve endings.symphylanAny of many arthropods of the class Symphyla.symphytan(entomology) Any member of the Symphyta suborder of sawflies.symposion(now historical) A drinking together; a symposium.syncoilinA muscle-specific intermediate filament that is a binding partner of desmin.syncollin(biochemistry) A small protein found in the exocrine pancreassyndineanAny dinoflagellate of the class SyndineasynedrionAn assembly that holds formal sessions.syngameon(genetics) A grouping of genetically related organisms that may or may not be morphologically similar and are recognized by systematists as being in different species or subspecies and may even belong to different genera.synkaryon(biology) A cell nucleus formed by the fusion of two preexisting nuclei (such as in an egg and a sperm cell)synodsmanA member of a church synod.synphilin(biochemistry) Any of a class of proteins, a mutated form of which is implicated in Parkinson's disease.synstatin(biochemistry) A peptide, derived from syndecan, that disrupts the interaction of integrinssynthaxinAlternative form of syntaxin.syntheton(rhetoric) A set phrase linking two or more non-synonymous words by conjunction.synucleinA small, soluble protein primarily expressed in neural tissue and in certain tumors.