6 days ago · 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 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 a …

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

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Jan 26, 2026 · There are multiple acronyms used to define the order of operation, such as BODMAS, BEDMAS, BIDMAS or PEDMAS . Order of Operations principles specify the order in which …

[count] mathematics : a mathematical process (such as addition or multiplication) that is used for getting one number or set of numbers from others according to a rule.

There are 18 meanings listed in OED's entry for the noun operation, four of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

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 his arm.