constant quantity constant of proportionality • constant-width font · · · Info · Definitions · Synonyms · Characters · · constant quantity · · Text Common · · Latin · · Scripts 17 · · Length 6 · · Syllables Definitions · · · (noun) a quantity that does not vary. Synonyms: constant, constant quantity, invariable. · · Noun Definition 1 Synonyms · · · constant · · Synonym 1 invariable · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F q latin small letter q U+0071 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075 y latin small letter y U+0079