WordWeight : Weighing the Words

Pronunciation : Der`i*va"tion
Part of Speech : n.
Etymology : [L. derivatio: cf. F. d?rivation. See Derive.]
Definition : 1. A leading or drawing off of water from a stream or source. [Obs.] T. Burnet.

2. The act of receiving anything from a source; the act of procuring an effect from a cause, means, or condition, as profits from capital, conclusions or opinions from evidence. As touching traditional communication, . . . I do not doubt but many of those truths have had the help of that derivation. Sir M. Hale.

3. The act of tracing origin or descent, as in grammar or genealogy; as, the derivation of a word from an Aryan root.

4. The state or method of being derived; the relation of origin when established or asserted.

5. That from which a thing is derived.

6. That which is derived; a derivative; a deduction. From the Euphrates into an artificial derivation of that river. Gibbon.

7. (Math.)

Defn: The operation of deducing one function from another according to some fixed law, called the law of derivation, as the of differentiation or of integration.

8. (Med.)

Defn: A drawing of humors or fluids from one part of the body to another, to relieve or lessen a morbid process.
Source : Webster's Unabridged Dictionary, 1913