A Quick and Simple Dictionary

derivation

1. Noun.  A leading or drawing off of water from a stream or source.
2. Noun.  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.
3. Noun.  The act of tracing origin or descent, as in grammar or genealogy; as, the derivation of a word from an Indo-European root.
4. Noun.  The state or method of being derived; the relation of origin when established or asserted.
5. Noun.  That from which a thing is derived.
6. Noun.  That which is derived; a derivative; a deduction.
7. Noun.  (mathematics) 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. Noun.  (medicine) A drawing of humors or fluids from one part of the body to another, to relieve or lessen a morbid process.