An Etymological Dictionary of Astronomy and Astrophysics
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Pertaining to a process or series of actions for achieving a result.

Adj. of → operation.

A method of mathematical analysis which in many cases makes it possible to reduce the study of differential operators, pseudo-differential operators and certain types of integral operators, and the solution of equations containing them, to an examination of simpler algebraic problems. It is also known as operational analysis.

→ operational; → calculus.

In the philosophy of science, the view that → concepts are defined in terms of measuring operations which determine their applicability. Same as operationism.

→ operation; → -ism.