operation
US /ˌɑpəˈreʃən/
・UK /ˌɒpəˈreɪʃn/
A2
noun
- Business or company, or its activities
- Functioning; use
- Medical procedure involving surgery
- The activities involved in running a business or organization.
- A mathematical process, such as addition, subtraction, multiplication, or division.
- A surgical procedure performed to treat a medical condition.
- A planned military activity or mission.
- A process or series of actions performed to achieve a specific result.
- A secret or clandestine activity.
Examples
UN troops supervised the relief operations.
the surgeon performing the operation