Английский разговорный словарь (основной) - derivative

dɪˈrɪvətɪv adj. & n. --adj. derived from another source; not original (his music is derivative and uninteresting). --n. 1 something derived from another source, esp.: a a word derived from another or from a root (e.g. quickly from quick). b Chem. a chemical compound that is derived from another. 2 Math. a quantity measuring the rate of change of another. øøderivatively adv. [F d÷rivatif -ive f. L derivativus (as DERIVE)]