stegocephalid
Any amphipod in the family Stegocephalidae.

stegocephalids
plural of stegocephalid

stegodontid
Any extinct elephant in the family Stegodontidae.

stegodontids
plural of stegodontid

steinbock
A type of ibex (Capra ibex).

steinbocks
plural of steinbock

steinernematid
Any nematode of the family Steinernematidae

steinernematids
plural of steinernematid

stenochilid
Any spider of the family Stenochilidae.

stenochilids
plural of stenochilid

stenolaemate
Any bryozoan of the class †Stenolaemata.

stenoplesictid
Any extinct civet-like mammal in the family Stenoplesictidae.

stenoplesictids
plural of stenoplesictid

stenopodid
Any shrimp in the family Stenopodidae.

stenopodids
plural of stenopodid

stenopsocid
Any barklouse in the family Stenopsocidae.

stenopsocids
plural of stenopsocid

stenopsychid
Any caddis fly in the family Stenopsychidae.

stenopsychids
plural of stenopsychid

stenostirid
Any bird in the family Stenostiridae.

stenostirids
plural of stenostirid

stenothecid
Any extinct mollusk in the family Stenothecidae.

stenothecids
plural of stenothecid

stenothyrid
Any freshwater snail in the family Stenothyridae.

stenothyrids
plural of stenothyrid

stenotritid
Any bee in the family Stenotritidae (now subfamily Stenotritinae in Colletidae).

stephanid
Any wasp in the family Stephanidae.

stephanids
plural of stephanid

stereospondylomorph
Any extinct temnospondyl of the clade †Stereospondylomorpha

stereospondylomorphs
plural of stereospondylomorph

sternid
Any bird in the family Sternidae, the terns (now considered part of the family Laridae).

sternids
plural of sternid

stethacanthid
Any holocephalan fish in the family Stethacanthidae.

stethacanthids
plural of stethacanthid

stichaeid
Any fish in the family Stichaeidae; a prickleback or a shanny.

stichaeids
plural of stichaeid

sticksman
A male drummer.

sticksmen
plural of sticksman

stictococcid
Any scale insect in the family Stictococcidae.

stictococcids
plural of stictococcid

stigmellid
Any moth in the family Stigmellidae, a synonym of the Nepticulidae.

stigmellids
plural of stigmellid

stilbonematid
Synonym of stilbonematin.

stilbonematids
plural of stilbonematid

stilbonematin
Any nematode of the subfamily Stilbonematinae

stilbonematins
plural of stilbonematin

stilipedid
Any amphipod in the family Stilipedidae.

stilipedids
plural of stilipedid

stiphidiid
Any spider in the family Stiphidiidae.

stiphidiids
plural of stiphidiid

stomapod
Any of the Stomapoda, a formerly used order of crustaceans corresponding to order Stomatopoda of mantis shrimp.

stomapods
plural of stomapod

stomatellid
Any gastropod in the family Stomatellidae, now considered to be the trochid subfamily Stomatellinae.

stomatellids
plural of stomatellid

stomatosuchid
Any extinct crocodylomorph of the family Stomatosuchidae

stomatosuchids
plural of stomatosuchid

stomoxyine
Any fly of the tribe Stomoxyini

stomoxyines
plural of stomoxyine

stonebuck
Alternative form of steinbock.

stonebucks
plural of stonebuck

storkling
The young of a stork.

storklings
plural of storkling

strabomantid
A cloud forest frog, of the family Strabomantidae.

strabomantids
plural of strabomantid

strangeress
A female stranger.

strangeresses
plural of strangeress

stratiomyid
Any fly of the family Stratiomyidae.

stratiomyids
plural of stratiomyid

stratiomyiid
Alternative form of stratiomyid.

stratiomyiids
plural of stratiomyiid

streber
Any of certain perciform fish of the genus Zingel, with long and slender bodies, found in rivers and streams in Europe.
Any of certain perciform fish of the genus Zingel, with long and slender bodies, found in rivers and streams in Europe.

strepsipteran
An insect of the order Strepsiptera.

streptaxid
Any snail in the family Streptaxidae.

streptaxids
plural of streptaxid

streptocephalid
Any fairy shrimp in the family Streptocephalidae.

streptocephalids
plural of streptocephalid

stricklandiid
Any brachiopod in the family †Stricklandiidae.

stringocephalid
Any brachiopod of the family Stringocephalidae.

stringocephalids
plural of stringocephalid

strobilopsid
Any snail in the family Strobilopsidae.

strobilopsids
plural of strobilopsid

stromateid
Any fish in the family Stromateidae, the butterfishes.

stromateids
plural of stromateid

strombite
A fossil shell of the genus Strombus.

strombites
plural of strombite

strongyl
Alternative spelling of strongyle.

strongyle
A nematode worm of the family Strongylidae, often parasitic in the gastrointestinal tract of mammals, especially horses
A monoaxon with a rounded end

strongyles
plural of strongyle

strongylocentrotid
Any sea urchin in the family Strongylocentrotidae

strongylocentrotids
plural of strongylocentrotid

strongylophthalmyiid
Any fly of the family Strongylophthalmyiidae.

strongylophthalmyiids
plural of strongylophthalmyiid

strongyls
plural of strongyl

strophocheilid
Any snail in the family Strophocheilidae.

strophocheilids
plural of strophocheilid

strophomenate
Any brachiopod of the class †Strophomenata.

struthiolariid
Any sea snail in the family Struthiolariidae.

struthiolariids
plural of struthiolariid

stryacocephalid
Any extinct therapsid of the family †Styracocephalidae

stryacocephalids
plural of stryacocephalid

sturnid
Any Any bird in the family Sturnidae; a mynah or starling

sturnids
plural of sturnid

stylephorid
Any deep-sea fish in the family Stylephoridae.

stylephorids
plural of stylephorid

stylinodontid
Any extinct taeniodont mammal in the family Stylinodontidae.

stylinodontids
plural of stylinodontid

styliolinid
Any mollusc of the family †Styliolinidae.

styloniscid
Any isopod in the family Styloniscidae.

styloniscids
plural of styloniscid

stylophoran
Any extinct animal of the class Stylophora

stylophorans
plural of stylophoran

stylopid
Any insect in the family Stylopidae.

stylopids
plural of stylopid

subergorgiid
Any soft coral in the family Subergorgiidae

subergorgiids
plural of subergorgiid

suberitid
Any sponge in the family Suberitidae.

suberitids
plural of suberitid

subulinid
Any snail in the family Subulinidae, which may be instead the achatinid subfamily Subulininae.

subulinids
plural of subulinid

subulitid
Any extinct sea snail in the family Subulitidae.

subulitids
plural of subulitid

succineid
Any snail in the family Succineidae.

succineids
plural of succineid

succubi
plural of succubus

succubus
A female demon which comes to men, especially monks, in their dreams to seduce them and have sexual intercourse, drawing energy from the men to sustain themselves, often until the point of exhaustion or death.
A strumpet, whore or prostitute.

succubuses
plural of succubus

sudamericid
Any extinct gondwanatherian mammal in the family Sudamericidae.

sudamericids
plural of sudamericid

summercock
A young male salmon

summercocks
plural of summercock

supertribe
one of the ranks used in classifying animal life forms; a supertribe is more specific than a subfamily and more general than a tribe

supertribes
plural of supertribe

surili
A small Old World monkey of the genus Presbytis, unlike other langurs in having bulges above the eyes.

susisuchid
Any extinct crocodyliform of the family †Susisuchidae

susisuchids
plural of susisuchid

swallowling
A young swallow.

swallowlings
plural of swallowling

swampdragon
Either of two species of Australian dragonfly of the genus Agrionoptera.

swampdragons
plural of swampdragon

swamphen
Any of several species of bird in the genus Porphyrio of the family Rallidae.

swaness
A female swan.

swanesses
plural of swaness

swanling
A young or baby swan; a cygnet.

swanlings
plural of swanling

sweeperess
A female sweeper.

sweeperesses
plural of sweeperess

swiftwing
Any of various species of dragonfly of the genus Lathrocordulia, endemic to Australia.

swiftwings
plural of swiftwing

sycettid
Any sponge in the family Sycettidae.

sycettids
plural of sycettid

sycoecine
Any wasp of the subfamily Sycoecinae