(operations)
Frequency: The word is one of the 700 most common words in English.
1.
An operation is a highly organized activity that involves many people doing different things.
The rescue operation began on Friday afternoon...
The soldiers were engaged in a military operation close to the Ugandan border.
...a big operation against the drugs trade.
N-COUNT: usu supp N
2.
A business or company can be referred to as an operation. (BUSINESS)
Thorn's electronics operation employs around 5,000 people...
The two parent groups now run their business as a single combined operation.
N-COUNT
3.
When a patient has an operation, a surgeon cuts open their body in order to remove, replace, or repair a diseased or damaged part.
Charles was at the clinic recovering from an operation on his arm.
N-COUNT
4.
If a system is in operation, it is being used.
Until the rail links are in operation, passengers can only travel through the tunnel by coach.
N-UNCOUNT: in/out of N
5.
If a machine or device is in operation, it is working.
There are three ski lifts in operation.
N-UNCOUNT: in/out of N
6.
When a rule, system, or plan comes into operation or you put it into operation, you begin to use it.
The Financial Services Act came into operation four years ago...
Cheaper energy conservation techniques have been put into operation in the developed world.
PHRASE: V inflects