Definition of lifetime in English:

Share this entry


Pronunciation: /ˈlīfˌtīm/


1The duration of a person’s life: a reward for a lifetime’s work
More example sentences
  • But, in imposing the lifetime ban, the chairman of the bench said the measure was necessary to protect other animals.
  • Our wars have taken from us the men and women we honor today and every hour of the lifetimes they had hoped to live.
  • Detention without any charges and without any court review can last an entire lifetime.
life span, life, days, duration of life, one's time (on earth), existence, one's career
1.1The duration of a thing’s existence or usefulness: a plan to extend the lifetime of satellites
More example sentences
  • Today, at the start of the 21st century, human lifetimes are being extended while the lifetimes of new technologies are becoming shorter and shorter.
  • Then, they make sure those roofs get the attention they deserve to extend their useful lifetimes.
  • The potential for improved radiation resistance of thin-film solar cells relative to single-crystal cells could extend the mission lifetimes substantially.
1.2 informal Used to express the view that a period is very long: five weeks was a lifetime, and anything could have happened
More example sentences
  • It took a lifetime for the elevator doors to open on my floor, and it took another lifetime to walk to my apartment door.
all one's life, a very long time, an eternity, years (on end), eons
informal ages (and ages), an age


of a lifetime

(Of a chance or experience) such as does not occur more than once in a person’s life: because of Frankie she had rejected the opportunity of a lifetime
More example sentences
  • Budding young thespians auditioned for the chance of a trip of a lifetime to Italy.
  • It is a dilemma which is denying promising competitors the chance of a lifetime, and has even divided families.
  • Two Mayo people had what can only be described as the most emotional experience of a lifetime.

For editors and proofreaders

Syllabification: life·time

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.