Dictionary.net

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"

activity by a military or naval force (as a maneuver or campaign); "it was a joint operation of the navy and air force"

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"

(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"

a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body; "they will schedule the operation as soon as an operating room is available"; "he died while undergoing surgery"

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"

activity by a military or naval force (as a maneuver or campaign); "it was a joint operation of the navy and air force"

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"

(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"

The act or process of operating; agency; the exertion of power, physical, mechanical, or moral.

The method of working; mode of action.

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

Effect produced; influence.

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

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.

The act or process of operating; agency; the exertion of power, physical, mechanical, or moral.

The method of working; mode of action.

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

Effect produced; influence.

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

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.

Working or way of working; regular action; as, the machine is in operation; agency; surgical action upon the body; a series of movements of an army or fleet.

Incision or excision of any part of the body.

Act or process of operating: agency: influence: method of working: action or movements: surgical performance.

Agency; influence; action; surgical act.

The act of operating; act; mode of action; process.

Surgical treatment, as for removal of a part.

Operatio, from opus, operis, 'work.' The application of instruments to the human body with the view of curing disease. The object of an operation, operatio chirurgica, is generally to divide or reunite parts, to extract extraneous or noxious bodies, and to replace organs that are wanting, by different instruments or artificial means. The principal operatory methods have been called Synthesis, Diaeresis, Exaeresis, and Prothesis. Frequently, the most difficult subject connected with an operation is to decide when it is absolutely called for or advisable, and when improper.

An act done with instruments or by the hands of a surgeon.

The performance of any act; in surgery, of a manual act upon the body, generally with instruments; also the act thus performed. [Lat.]

n. Act or process of operating; agency; the exertion of power, physical, mechanical, or moral;- action; effect;- method of working; process; manipulation;- mathematical change of quantities or relations;- action of machinery;- strategetical movement of an army or fleet;- in surgery, any methodical action of the hand, or of the hand with instruments, on the human body.