universal gas constant universal donor • universal gravitational constant · · · Info · Definitions · Synonyms · Characters · · universal gas constant · · Text Common · · Latin · · Scripts 22 · · Length 7 · · Syllables Definitions · · · (noun) (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole. Synonyms: gas constant, universal gas constant, R. · · Noun Definition 1 Synonyms · · · gas constant · · Synonym 1 r · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075 v latin small letter v U+0076