2. (Gram.)
Defn: 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. (Mus.)
Defn: 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. (Med.)
Defn: An agent which is adapted to produce a derivation (in the medical sense).
5. (Math.)
Defn: A derived function; a function obtained from a given function by a certain algebraic process.
Note: Except in the mode of derivation the derivative is the same as the differential coefficient. See Differential coefficient, under Differential.
6. (Chem.)