derivative

Concise Oxford English Dictionary © 2008 Oxford University Press:
derivative /dɪˈrɪvətɪv/

▶adjective

• 1 chiefly derogatory imitative of the work of another artist, writer, etc.

• 2 (of a financial product) having a value deriving from an underlying variable asset.

▶noun

• 1 something which is derived from another source.

• 2 (often derivatives) Finance a derivative future, option, or other financial product.

• 3 Mathematics an expression representing the rate of change of a function with respect to an independent variable.

– derivatives
derivatively adverb.

– origin ME: from Fr. dérivatif, -ive, from L. derivativus, from derivare (see derive).