derivative
1. de.riv.a.tive \di-'riv-*t-iv\ aj 1: formed by derivation 2: made up of
or marked by derived elements - de.riv.a.tive.ly av
2. derivative n 1: a word formed by derivation 2: something derived 3:
the limit of the ratio of the change in a function to the corresponding
change in its independent variable as the latter change approaches zero 4a:
a chemical substance so related structurally to another substance as to be
theoretically derivable from it 4b: a substance that can be made from
another substance in one or more step s