Definition of "derivation" in 英语

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; an instance thereof (for example, an etymology).

   • 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; the result of a deduction.

8. The process of deriving one thing from another, especially in logic; a deduction.

9. (mathematics, calculus) The process of application of the derivative operator to a function, yielding another function called the derived function of the first.

10. (mathematics, differential algebra) An algebraic generalization of the derivative operator (from its natural setting in the ring of real-valued functions) to a general associative algebra over a field. Formally, (given an algebra A over a field K) a K-linear endomorphism that satisfies Leibnitz's Law.

11. (medicine, historical) A drawing of humors or fluids from one part of the body to another, to relieve or lessen a morbid process.