Constant - Definition, Meaning & Synonyms - Vocabulary.com

Think of something or someone that does not change as constant. A classmate's constant drumming on the table with his fingers could be a constant source of ... SKIPTOCONTENT constant Thinkofsomethingorsomeonethatdoesnotchangeasconstant.Aclassmate'sconstantdrummingonthetablewithhisfingerscouldbeaconstantsourceofannoyance. ConstantderivesfromLatinverbmeaning"tostandwith,"sosomethingconstantiscontinuallystandingwithyouandnotwavering.Youmaybethankfulfortheconstantcompanionshipofyourdogbutnotnecessarilyforyourteacher'sconstanthomeworkassignments.Inmathandscience,aconstantisanumberthatisfixedandknown,unlikeavariablewhichchangeswiththecontext.Thatideacrossesovertoreallife.Ifafriendisaconstantinyourlife,thatmeanstheyhavealwaysbeenwithyouandthereforyou. Definitionsofconstant adjective uninterruptedintimeandindefinitelylongcontinuing “in constantpain” synonyms: ceaseless,incessant,never-ending,perpetual,unceasing,unremitting continuous,uninterrupted continuingintimeorspacewithoutinterruption adjective unvaryinginnature “maintaineda constanttemperature” synonyms: changeless,invariant,unvarying invariable notliabletoorcapableofchange adjective steadfastinpurposeordevotionoraffection “aman constantinadherencetohisideals” “constantasthenorthernstar” Synonyms: unchangeable notchangeableorsubjecttochange staunch,steadfast,unswerving firmanddependableespeciallyinloyalty unfailing,unflagging unceasing faithful steadfastinaffectionorallegiance stable resistanttochangeofpositionorcondition invariable notliabletoorcapableofchange seemoreseeless Antonyms: inconstant likelytochangefrequentlyoftenwithoutapparentorcogentreason;variable changeable,changeful suchthatalterationispossible;havingamarkedtendencytochange false,untrue (usedespeciallyofpersons)notdependableindevotionoraffection;unfaithful fickle,volatile markedbyerraticchangeablenessinaffectionsorattachments unfaithful nottruetodutyorobligationorpromises unstable lackingstabilityorfixityorfirmness variable liabletoorcapableofchange volatile evaporatingreadilyatnormaltemperaturesandpressures showmoreantonyms... noun aquantitythatdoesnotvary synonyms: constantquantity,invariable seemoreseeless types: parameter,parametricquantity aconstantintheequationofacurvethatcanbevariedtoyieldafamilyofsimilarcurves degreeoffreedom oneoftheminimumnumberofparametersneededtodescribethestateofaphysicalsystem typeof: quantity theconceptthatsomethinghasamagnitudeandcanberepresentedinmathematicalexpressionsbyaconstantoravariable noun anumberrepresentingaquantityassumedtohaveafixedvalueinaspecifiedmathematicalcontext “thevelocityoflightisa constant” seemoreseeless types: show24types... hide24types... Avogadronumber,Avogadro'snumber thenumberofmoleculesinamoleofasubstance(approximately602,250,000,000,000,000,000,000) Boltzmann'sconstant constantusedinthecalculationoftheidealgasconstant coefficient aconstantnumberthatservesasameasureofsomepropertyorcharacteristic cosmologicalconstant anarbitraryconstantintheequationsofgeneralrelativitytheory equilibriumconstant (chemistry)theratioofconcentrationswhenequilibriumisreachedinareversiblereaction(whentherateoftheforwardreactionequalstherateofthereversereaction) R,gasconstant,universalgasconstant (physics)theuniversalconstantinthegasequation:pressuretimesvolume=Rtimestemperature;equalto8.3143joulesperkelvinpermole G,constantofgravitation,gravitationalconstant,universalgravitationalconstant (physics)theuniversalconstantrelatingforcetomassanddistanceinNewton'slawofgravitation Hubbleconstant,Hubbleparameter,Hubble'sconstant,Hubble'sparameter (cosmology)theratioofthespeedofrecessionofagalaxy(duetotheexpansionoftheuniverse)toitsdistancefromtheobserver;theHubbleconstantisnotactuallyaconstant,butisregardedasmeasuringtheexpansionratetoday ioniccharge thechargeonanionisequaltoaconstantchargeemultipliedbyanintegerfrom1to15 constantofproportionality,factorofproportionality theconstantvalueoftheratiooftwoproportionalquantitiesxandy;usuallywritteny=kx,wherekisthefactorofproportionality c,lightspeed,speedoflight thespeedatwhichlighttravelsinavacuum;theconstancyanduniversalityofthespeedoflightisrecognizedbydefiningittobeexactly299,792,458meterspersecond absorptance,absorptioncoefficient,coefficientofabsorption ameasureoftherateofdecreaseintheintensityofelectromagneticradiation(aslight)asitpassesthroughagivensubstance;thefractionofincidentradiantenergyabsorbedperunitmassorthicknessofanabsorber coefficientofdrag,dragcoefficient theratioofthedragonabodymovingthroughairtotheproductofthevelocityandthesurfaceareaofthebody coefficientoffriction theratiooftheweightofanobjectbeingmovedalongasurfaceandtheforcethatmaintainscontactbetweentheobjectandthesurface coefficientofmutualinduction,mutualinductance ameasureoftheinductionbetweentwocircuits;theratiooftheelectromotiveforceinacircuittothecorrespondingchangeofcurrentinaneighboringcircuit;usuallymeasuredinhenries coefficientofselfinduction,self-inductance theratiooftheelectromotiveforceproducedinacircuitbyself-inductiontotherateofchangeofcurrentproducingit,expressedinhenries modulus (physics)acoefficientthatexpresseshowmuchofaspecifiedpropertyispossessedbyaspecifiedsubstance coefficientofexpansion,expansivity thefractionalchangeinlengthorareaorvolumeperunitchangeintemperatureatagivenconstantpressure coefficientofreflection,reflectance,reflectionfactor,reflectivity thefractionofradiantenergythatisreflectedfromasurface transmission,transmittance thefractionofradiantenergythatpassesthroughasubstance absoluteviscosity,coefficientofviscosity,dynamicviscosity ameasureoftheresistancetoflowofafluidunderanappliedforce weight,weighting (statistics)acoefficientassignedtoelementsofafrequencydistributioninordertorepresenttheirrelativeimportance dissociationconstant theequilibriumconstantforareversibledissociation Planck'sconstant,h theconstantofproportionalityrelatingtheenergyofaphotontoitsfrequency;approximately6.626x10^-34joule-second typeof: number aconceptofquantityinvolvingzeroandunits WordFamily EDITOR’SCHOICE Testprepfromtheexperts BoostyourtestscorewithprogramsdevelopedbyVocabulary.com’sexperts. 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