(n.) A drawing of humors or fluids from one part of the body to another, to relieve or lessen a morbid process.
(n.) A leading or drawing off of water from a stream or source.
(n.) That from which a thing is derived.
(n.) That which is derived; a derivative; a deduction.
(n.) 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.
(n.) The act of tracing origin or descent, as in grammar or genealogy; as, the derivation of a word from an Aryan root.
(n.) 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.
(n.) The state or method of being derived; the relation of origin when established or asserted.