first derivative first-degree burn • first-done · · · Info · Definitions · Synonyms · Characters · · first derivative · · Text Common · · Latin · · Scripts 16 · · Length 5 · · Syllables Definitions · · · (noun) the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx. Synonyms: derived function, derivative, differential coefficient, differential, first derivative. · · Noun Definition 1 Synonyms · · · derived function · · Synonym 1 derivative · · Synonym 2 differential coefficient · · Synonym 3 differential · · Synonym 4 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 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 v latin small letter v U+0076