The meaning of OPERATION is performance of a practical work or of something involving the practical application of principles or processes. How to use operation in a sentence.

OPERATION definition: 1. the fact of operating or being active: 2. the way that parts of a machine or system work…. Learn more.

Operation definition: an act or instance, process, or manner of functioning or operating.. See examples of OPERATION used in a sentence.

Definition of operation noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

An operation can take zero or more input values (also called "operands" or "arguments") to a well-defined output value. The number of operands is the arity of the operation.

1. an act or instance, process, or manner of functioning or operating.

When a patient has an operation, a surgeon cuts open their body in order to remove, replace, or repair a diseased or damaged part. Charles was at the clinic recovering from an operation on …

Nov 6, 2025 · operation (countable and uncountable, plural operations) (uncountable) The method by which a device performs its function.

Operation can refer to medical surgery, a military campaign, or mathematical methods, such as multiplication and division. Operation comes from the Latin word opus (“work”) and can refer to …

Procedure is used especially in medical English, for example by doctors and people who work in hospitals.