definite quantity definite-proportions law • definite-time · · · Info · Definitions · Characters · · definite quantity · · Text Common · · Latin · · Scripts 17 · · Length 7 · · Syllables Definitions · · · (noun) a specific measure of amount. Synonyms: definite quantity. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 f latin small letter f U+0066 i latin small letter i U+0069 n latin small letter n U+006E q latin small letter q U+0071 t latin small letter t U+0074 u latin small letter u U+0075 y latin small letter y U+0079