A process or series of acts involved in a particular form of work or activity. The operation of the new machinery requires specialized training.
A surgical procedure performed on a patient. The operation to remove the tumor was successful.
An organized activity involving a number of people, especially members of the armed forces or the police. The military operation was launched at dawn.
The functioning or working of a machine, system, or process. The operation of the computer system was interrupted by a power outage.
A business or company, especially one involved in a particular type of work. The family-run operation has been in business for over 50 years.
A mathematical or logical action performed to produce a result. Addition is a basic arithmetic operation.