Derivative

Part of speech: noun (n.)

1. That which is derived; anything obtained or deduced from another.

2. A word formed from another word, by a prefix or suffix, an internal modification, or some other change; a word which takes its origin from a root.

3. A chord, not fundamental, but obtained from another by inversion; or, vice versa, a ground tone or root implied in its harmonics in an actual chord.

4. An agent which is adapted to produce a derivation (in the medical sense).

5. A derived function; a function obtained from a given function by a certain algebraic process.

6. A substance so related to another substance by modification or partial substitution as to be regarded as derived from it; thus, the amido compounds are derivatives of ammonia, and the hydrocarbons are derivatives of methane, benzene, etc.

Part of speech: adjective (a.)

Obtained by derivation; derived; not radical, original, or fundamental; originating, deduced, or formed from something else; secondary; as, a derivative conveyance; a derivative word. Derivative circulation, a modification of the circulation found in some parts of the body, in which the arteries empty directly into the veins without the interposition of capillaries. Flint. -- De*riv"a*tive*ly, adv. -- De*riv"a*tive*ness, n.