derivative

(noun) the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx. Synonyms: derived function, differential coefficient, differential, first derivative.

(noun) a compound obtained from, or regarded as derived from, another compound.

(noun) a financial instrument whose value is based on another security. Synonyms: derivative instrument.

(noun) (linguistics) a word that is derived from another word. Example: "`electricity' is a derivative of `electric'."

(adj) resulting from or employing derivation. Examples: "A derivative process." "A highly derivative prose style."