1. (noun)derived function, derivative, differential coefficient, differential, first derivative the result of mathematical differentiation; the instantaneous change of one quantityrelative to another; df(x)/dx
2. (noun)derivative a compound obtained from, or regarded as derived from, another compound
3. (noun)derivative instrument, derivative a financial instrument whose value is based on another security
4. (noun)derivative (linguistics) a word that is derived from another word "`electricity' is a derivative of `electric'"
5. (adj)derivative resulting from or employing derivation "a derivative process"; "a highly derivative prose style"