duration - definition and synonyms

noun [countable/uncountable] formal 

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  1. the period of time during which something continues to happen or exist

    Treatment of the disease depends on its severity and duration.

    duration of:

    The duration of the film is 110 minutes.

    for the duration of something:

    Passengers are requested not to smoke for the duration of the flight.

    in duration:

    The solar eclipse was roughly two minutes in duration.