Which one is correct?
"in operation" or "on operation"?

in operation

This phrase is correct and commonly used in English.

Use 'in operation' to describe something that is functioning or working, such as a machine, system, or organization.

Examples:

  • The factory is in operation 24 hours a day.
  • The new software system will be in operation by next week.
  • The emergency response team is in operation.
  • The train service is in operation despite the bad weather.
  • The hospital is in operation round the clock.

on operation

This phrase is not a standard English construction.

The correct phrase is 'in operation.' 'On operation' is not a standard English phrase. 'In operation' is commonly used to describe something that is functioning or working.

Last Updated: March 27, 2024

TextRanch: The best way to perfect your writing.

Discover why 1,062,726 users count on TextRanch to get their English corrected!

One of our experts will correct your English.

Our experts

Related Comparisons

Why choose TextRanch?

Lowest prices
Up to 50% lower than other online editing sites.

Fastest Times
Our team of editors is working for you 24/7.

Qualified Editors
Native English experts for UK or US English.

Top Customer Service
We are here to help. Satisfaction guaranteed!