adverb
Used before a number, amount, or time to say that it is not exact but is close to the real figure.
The repair will take approximately two hours.
Approximately 300 people attended the event.
Good to know
Approximately is more formal than about. In everyday speech, about is often more natural.
Common phrases & grammar
approximately 10 percent · approximately two hours · approximately 5 miles · approximately 100 people
approximately + number/amount/time
subject + verb + approximately + number/amount/time