derivation

Etymology

From Middle English derivacioun, borrowed from Middle French dérivation, from Latin dērīvātiō, dērīvātiōnem. Morphologically derive + -ation

noun

1. A leading or drawing off of water from a stream or source.
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.
3. (genealogy, linguistics) The act of tracing origin or descent.
   the derivation of a word from an Indo-European root
4. (grammar) Forming a new word by changing the base of another word or by adding affixes to it.
5. The state or method of being derived; the relation of origin when established or asserted.
6. That from which a thing is derived.
7. That which is derived; a derivative; a deduction.
8. (mathematics) The operation of deducing one function from another according to a fixed definition, referred to as derivation or differentiation; this is the inverse operation to integration.
9. (medicine) A drawing of humors or fluids from one part of the body to another, to relieve or lessen a morbid process.