- an act or instance, process, or manner of functioning or operating.
- the state of being operative (usually preceded by in or into): a rule no longer in operation.
- the power to act; efficacy, influence, or force.
- the exertion of force, power, or influence; agency: the operation of alcohol on the mind.
- a process of a practical or mechanical nature in some form of work or production: a delicate operation in watchmaking.
- a course or procedure of productive or industrial activity: building operations.
- a particular process or course: mental operations.
- a business transaction, especially one of a speculative nature; deal: a shady operation.
- a business, especially one run on a large scale: a multinational operation.
- a procedure aimed at restoring or improving the health of a patient, as by correcting a malformation, removing diseased parts, implanting new parts, etc.
- Mathematics.
- a mathematical process, as addition, multiplication, or differentiation.
- the action of applying a mathematical process to a quantity or quantities.
- any discrete activity or action that is performed by a computer, as reading, writing, processing, sending, or receiving data: The http request operation has timed out.
- Military.
- a campaign, mission, maneuver, or action.
- the conduct of a campaign, mission, etc.
- a headquarters, office, or place from which a military campaign, air traffic to and from an airfield, or any of various other activities, is planned, conducted, and controlled.
- the people who work at such a headquarters.
- the act, process, or manner of operating
- the state of being in effect, in action, or operative (esp in the phrases in or into operation)
- a process, method, or series of acts, esp of a practical or mechanical nature
- any manipulation of the body or one of its organs or parts to repair damage, arrest the progress of a disease, remove foreign matter, etc
- a military or naval action, such as a campaign, manoeuvre, etc
- (capital and prenominal when part of a name)
- maths
- any procedure, such as addition, multiplication, involution, or differentiation, in which one or more numbers or quantities are operated upon according to specific rules
- a function from a set onto itself
- a commercial or financial transaction
