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.

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

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 …

• He began to write down the questions he needed answered in order to put his plan into operation. • The engine is started on petrol, with just enough suction to bring the gasifier into …

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