derivation

Noun

• A leading or drawing off of water from a stream or source.
• 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.
• The state or method of being derived; the relation of origin when established or asserted.
• That from which a thing is derived.
• That which is derived; a derivative; a deduction.
• The process of deriving one thing from another, especially in logic; a deduction.
• (Mathematics) The operation of deducing one function from another according to some fixed law, called the law of derivation, as the operation of differentiation or of integration.
• (Medicine) A drawing of humors or fluids from one part of the body to another, to relieve or lessen a morbid process.