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 meaning: 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.

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

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

Dec 17, 2025 · operation (countable and uncountable, plural operations) (uncountable) The method by which a device performs its function.

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 …

An operation must not be confounded with the process by which the operation is effected. Thus, there is but one operation of extracting the cube root of a number, but there are several …

Military operation ... A military operation (op) is the coordinated military actions of a state, or a non-state actor, in response to a developing situation. These actions are designed as a …

OPERATION meaning: 1 : a process in which a doctor cuts into someone's body in order to repair or remove a damaged or diseased part; 2 : a usually small business or organization