Stone, Span, Slug, Sack.
The word "science" is not an abbreviation thus the letter "s" has no specific meaning on its own.
stone
Jigger as a unit of measure for alcohol
HadirHaedusHaldusHamalHassalehHydraHekaHezeHoedusHomamHyadumHydrobius
Mice and monarch butterfly are grassland animals. They begin with the letter m.
Delta
Crataegus is a bush
ounces
A century.
Units; Unguent are some examples.
Hand (used to measure horses and ponies)
i think it is to measure units of a square
zero angle - an angle whose measure is zero
Some 8 letter words that begin with the letter a:aardvarkabnormalabrasionabsenteeabstractacademicaccuracyactivateactivityadditionadditiveadequacyadherentadhesiveadmonishadvisoryaerationagnosticaircraftallergicalmightyalthoughaluminumambitionamortizeamputateanalogueanalyticannounceannuallyappendixappraiseapprovalaquariumarguablyarmchairasbestosastonishathleticaudienceaviatrix
if you measure a crayon with inches is not the same as measuring with feet.
Some clothes that begin with the letter J are:jacketjeansjumper
Some adjectives that begin with letter G are:gabbygarrulousgauchegauntgaygenerousgentlegiantgiftedgildedgingerglamorousgloomygoldgooeygoofygorgeousgranitegratefulgreedygreengreygrimgrowngrumpyguiltygulliblegustygutsygypsum
Some street names that begin with the letter J:JackrabbitJacksonJacquelynJadeJamaicaJamesJamestownJanuaryJasmineJasperJavaJayJeffersonJenniferJeffreyJenkinsJerichoJeromeJerseyJessieJewelJewettJoanneJohnJohnsonJollyJonesJordanJosephJosephineJoyJoyceJuarezJubileeJudgeJudithJuliaJunctionJuniperJupiter
Some 5 letter words that begin with T:tabbytabletabletackytaffytainttakentalontapirtardytarrytastetaunttawnyteachteenyteethtempotenortensetepeetepidtersethanktheftthemetherethesethickthiefthinethingthinkthirdthongthornthreethrewthrobthrowthumbtidaltigertighttinkletitletoasttokentongstoothtopictorchtotaltouchtoughtracetracktradetrailtraintraittramptrashtreattrialtribetricktriketrouttrucktrunktrusttruthtuliptumortwist