Definitions for: Operation

[n] the activity of operating something (a machine or business etc.); "her smooth operation of the vehicle gave us a surprisingly comfortable ride"
[n] a planned activity involving many people performing various actions; "they organized a rescue operation"; "the biggest police operation in French history"; "running a restaurant is quite an operation"; "consolidate the companies various operations"
[n] a process or series of acts especially of a practical or mechanical nature involved in a particular form of work; "the operations in building a house"; "certain machine tool operations"
[n] (mathematics) calculation by mathematical methods; "the problems at the end of the chapter demonstrated the mathematical processes involved in the derivation"; "they were learning the basic operations of arithmetic"
[n] activity by a military or naval force (as a maneuver or campaign); "it was a joint operation of the navy and air force"
[n] a business especially one run on a large scale; "a large-scale farming operation"; "a multinational operation"; "they paid taxes on every stage of the operation"; "they had to consolidate their operations"
[n] the performance of some composite cognitive activity; an operation that affects mental contents; "the process of thinking"; "the cognitive operation of remembering"
[n] (computer science) data processing in which the result is completely specified by a rule (especially the processing that results from a single instruction); "it can perform millions of operations per second"
[n] process or manner of functioning or operating; "the power of its engine determine its operation"; "the plane's operation in high winds"; "they compared the cooking performance of each oven"; "the jet's performance conformed to high standards"
[n] the state of being in effect or being operative; "that rule is no longer in operation"

Webster (1913) Definition: Op`er*a"tion, n. [L. operatio: cf. F. op['e]ration.]
1. The act or process of operating; agency; the exertion of
power, physical, mechanical, or moral.

The pain and sickness caused by manna are the
effects of its operation on the stomach. --Locke.

Speculative painting, without the assistance of
manual operation, can never attain to perfection.

2. The method of working; mode of action.

3. That which is operated or accomplished; an effect brought
about in accordance with a definite plan; as, military or
naval operations.

4. Effect produced; influence. [Obs.]

The bards . . . had great operation on the vulgar.

5. (Math.) Something to be done; some transformation to be
made upon quantities, the transformation being indicated
either by rules or symbols.

6. (Surg.) Any methodical action of the hand, or of the hand
with instruments, on the human body, to produce a curative
or remedial effect, as in amputation, etc.

Calculus of operations. See under Calculus.

Synonyms: cognitive operation, cognitive process, functioning, mathematical operation, mathematical process, mental process, military operation, performance, procedure, process, surgery, surgical operation, surgical procedure, surgical process

See Also: ablation, access, action, activeness, activity, activity, amphibious operation, amputation, angioplasty, Argonne, Argonne Forest, arithmetic operation, arthroplasty, arthroscopy, asynchronous operation, attack, autoplasty, auxiliary operation, basic cognitive process, binary arithmetic operation, binary operation, boolean operation, brain surgery, business activity, calculation, campaign, castration, cauterisation, cauterization, cautery, chemosurgery, cognition, combination, commercial activity, commission, computation, computer operation, computing, concurrent operation, consecutive operation, construction, control function, control operation, covert operation, craniotomy, cryosurgery, curettage, curettement, cutting out, D and C, data processing, debridement, decortication, differentiation, dilatation and curettage, dilation and curettage, dyadic operation, electrosurgery, enterostomy, enterotomy, enucleation, evisceration, excision, exenteration, exponentiation, extirpation, fenestration, fixed-cycle operation, gastrectomy, gastroenterostomy, gastrostomy, haemorrhoidectomy, haemostasia, haemostasis, heart surgery, hemorrhoidectomy, hemostasia, hemostasis, higher cognitive process, hysterotomy, implantation, incision, information gathering, integration, intestinal bypass, involution, iridectomy, iridotomy, jejunostomy, knowledge, logic operation, logical operation, lookup, machine operation, major surgery, maneuver, manoeuvre, matrix operation, maximization, medical procedure, memory access, Meuse, Meuse River, Meuse-Argonne, Meuse-Argonne operation, microsurgery, military campaign, military mission, minor surgery, mission, monadic operation, multiplex operation, myotomy, myringectomy, myringoplasty, myringotomy, naval campaign, neurosurgery, noesis, nose job, offence, offense, offensive, off-line operation, onrush, onset, onslaught, Operation Desert Storm, orchiopexy, osteotomy, ostomy, parallel operation, peacekeeping, peacekeeping operation, permutation, phalloplasty, phlebectomy, photocoagulation, printing operation, process, reenforcement, reinforcement, relaxation, relaxation method, rescue operation, rhinoplasty, running, search, section, sequential operation, serial operation, simulated military operation, simultaneous operation, sort, sorting, support, surgical incision, synchronous operation, threshold operation, unary operation, work

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