The Meaning of r

• (noun) the length of a line segment between the center and circumference of a circle or sphere
• (noun) the 18th letter of the Roman alphabet
• (noun) (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole
• (noun) a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air

Synonyms

roentgen , R , gas constant , universal gas constant , R , R , radius

Homophones

ahr , ar , are , our(3) , r. , rh

Rhymes

adar , afar , ahr , ajar , akbar , alar , alcazar , algar , allar , almanzar , almodovar , alvare , amar , amritsar , andujar , aquilar , ar , are , avatar , avelar , aydar , azar , azhar , baar , babar , bahr , bahre , balakumar , baldemar , baltazar , bar , barr , barre , bazaar , bazar , bejar , bizarre , bodnar , bogar , bognar , bomar , boxcar , boyar , car , carr , carre , caspar , caviar , ceasar , char , cigar , cinnabar , cisar , claar , clar , commissar , cotnoir , cousar , crowbar , csar , csaszar , czar , dagmar , dakar , dar , darr , demar , detar , dinar , disbar , dzhokhar , dzokhar , earthstar , emdr , fahr , far , farquar , farr , farrar , feldspar , flohr , fluorspar , gar , ghafar , giroir , giscard , godar , gohr , gombar , gregoire , guitar , guizar , haar , handlebar , hectare , hekmatyar , hocevar , hribar , huizar , jabar , jabbar , jaffar , jaguar , jahr , jamar , jar , jiar , kadar , kahr , kahre , karr , klar , kumar , labar , lahr , lamar , lamarr , lar , lebar , lemar , lodestar , lumbar , magyar , mahr , mar , marr , mawr , mcgarr , meagher , melgar , memoir , menjivar , millibar , minicar , miramar , mizar , motorcar , mylar , najar , najjar , nascar , navar , navarre , nayyar , nazar , npr , obar , obarr , paar , par , parr , pharr , pintar , preslar , qasr , qatar , quarre , radar , railcar , rajkumar , registrar , renoir , repertoire , reservoir , revoir , ribar , robar , saar , sagar , saldivar , sandbar , sar , scar , schaar , schar , scharr , seminar , sidebar , sitar , soutar , spahr , spar , sphar , spohr , srinagar , staar , star , starr , streetcar , subpar , sunstar , tabar , tar , tarr , telstar , tesar , thar , tigar , tokar , tovar , transtar , tsar , tygar , valdemar , victoire , yahr , zadar , zagar , zalar , zaldivar , zanzibar , zulfikar