Noun

(en 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 act of tracing origin or descent, as in grammar or genealogy; as, the derivation of a word from an Indo-European root.

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.

(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.

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

Noun

(en noun)

One's social heritage; what one did in the past/previously.

A part of the picture that depicts scenery to the rear or behind the main subject; context.

* {{quote-magazine, year=2013, month=May-June, author= William E. Conner

, title= An Acoustic Arms Race , volume=101, issue=3, page=206-7, magazine=(American Scientist) , passage=Earless ghost swift moths become “invisible” to echolocating bats by forming mating clusters close

Information relevant to the current situation about past events; history.

A less important feature of scenery (as opposed to foreground).

(computing) The image or color, over which a computer's desktop items are shown (e.g. icons or application windows).

(computing) Activity on a computer that is not normally visible to the user.