duration · noun U /duːˈreɪ.ʃən/Full view
C1 the amount of time that something lasts
Dictionary example:

The singer remained in the hotel for the duration of his stay in the UK.

Learner example:

If you are between 18 and 30 years old, we offer you a wide range of jobs with a duration varying from two weeks to three months. (Certificate in Advanced English; C1; German)

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