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 oper… (More on Operation)