stoichiometry stoichiometrically • stoicism · · · Info · Definitions · Characters · · stoichiometry · · Text Latin · · Script 13 · · Length 4 · · Syllables Definitions · · · (noun) (chemistry) the relation between the quantities of substances that take part in a reaction or form a compound (typically a ratio of whole integers). · · Noun Definition 1 Characters · · c latin small letter c U+0063 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 m latin small letter m U+006D 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 y latin small letter y U+0079