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 …

Look up operation in Wiktionary, the free dictionary.

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 different processes.

Mar 21, 2026 · Noun operation (countable and uncountable, plural operations) (uncountable) The method by which a device performs its function.

Operation Liberation has documented and investigated animal cruelty and oppressive events, facilities, operations, and rituals across four continents. Our work has contributed to ongoing cruelty …

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

An operation is a procedure or activity carried out to achieve a specific purpose or outcome. This can refer to a series of actions or steps taken in a particular order, whether in mathematics, computer …

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.