operation
/ˌɑpəˈreɪʃən/
noun
- A planned activity or process, especially one involving many people or steps.
- The military operation was carefully planned for months.
- The rescue operation saved three hikers from the mountain.
- The company launched a new marketing operation to promote the product.
- The state of working or being used; the act of making something function.
- The factory will begin operation next month.
- Please read the manual before putting the machine into operation.
- The elevator is out of operation until the repair is complete.
- A medical procedure in which a doctor cuts into a patient's body to repair or remove something; surgery.
- The operation took three hours, but it was successful.
- She had an operation to fix her broken knee.
- After the operation, the patient rested in the hospital for a week.
- A mathematical process such as addition, subtraction, multiplication, or division.
- Addition and subtraction are basic arithmetic operations.
- In math class, we learned a new operation called long division.
- Each operation must be performed in the correct order.
Antonyms