Look up operation in Wiktionary, the free dictionary.

Operation may refer to:

• Scientific operation
• Surgery, or operation
• An operation or operator in mathematics (see unary operation, binary operation, arity)
• In language, an operation is a word which represents a function (or instruction), rather than a term or name
• In computer science, an operation is called an instruction
• Military operation, a military action (usually in a military campaign) using deployed forces
• Covert operation, a clandestine military or political action
• Sting operation, an operation designed to catch a person committing a crime, by means of deception
• Business operations, manufacturing operations, operations management
• Operations support system used in the telecommunications industry
• Operation of law, a legal term that indicates that a right or liability has been created for a party
• Anomalous operation, in parapsychology, a term describing a broad category of purported paranormal effects
• Musical operations such as transposition, inversion, multiplication, permutation, counterpoint
• Operation (game), a battery-operated game of physical skill

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