n. [ L. operatio: cf. F. opération. ]
The pain and sickness caused by manna are the effects of its operation on the stomach. Locke. [ 1913 Webster ]
Speculative painting, without the assistance of manual operation, can never attain to perfection. Dryden. [ 1913 Webster ]
The bards . . . had great operation on the vulgar. Fuller. [ 1913 Webster ]
Calculus of operations.
adj.
de facto apartheid still operational even in the `new' African nations Leslie Marmon Silko [ WordNet 1.5 ]
n. (Philos.) the doctrine that the meaning of a proposition consists of the operations involved in defining, proving, or applying it. [ WordNet 1.5 ]
adj. (Philos.) Of or pertaining to operationalism.
n. (Finance) financial transactions at a brokerage; having to do with the execution of trades and keeping customer records.