lifetime - definition and synonyms

 
 
noun [countable] [usually singular] 

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/ˈlaɪfˌtaɪm/
singularlifetime
plurallifetimes
  1. 1
    the period of time when someone is alive

    He achieved a lot in his short lifetime.

    There have been many changes during my lifetime.

    A cure for cancer could be found within our children’s lifetime.

  2. 2
    the length of time that something exists or works

    plans to extend the lifetime of the power station

    We aim to halve unemployment within the lifetime of this government.

  3.   From our crowdsourced Open Dictionary
    3
    lasting for the rest of one's life

    Marriage is a lifetime commitment.

    Submitted by Georgia P. from Greece on 08/11/2016