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lifetime
WORDNET DICTIONARY
Noun lifetime has 1 sense
- lifetime(n = noun.time) life, life-time, lifespan - the period during which something is functional (as between birth and death); "the battery had a short life"; "he lived a long and happy life" is a kind of period, period of time, time period
has parts: birth, death, demise, dying, time of life, age, eld
has particulars: afterlife, hereafter
OXFORD DICTIONARY
lifetime, n.
1 the duration of a person's life.
2 the duration of a thing or its usefulness.
3 colloq. an exceptionally long time.
1 the duration of a person's life.
2 the duration of a thing or its usefulness.
3 colloq. an exceptionally long time.
Idiom
of a lifetime such as does not occur more than once in a person's life (the chance of a lifetime; the journey of a lifetime).
THESAURUS
lifetime
age, animal spirits, animate existence, animation, being alive, birth, existence, for life, generation, having life, immortality, life, lifelong, liveliness, livelong, living, long life, longevity, period of existence, spriteliness, viability, vitality, vivacityROGET THESAURUS
lifetime
Period
N period, age, era, second, minute, hour, day, week, month, quarter, year, decade, decenniumm lustrum, quinquennium, lifetime, generation, epoch, ghurry, lunation, moon, century, millennium, annus magnus, horary, hourly, annual.
For further exploring for "lifetime" in Webster Dictionary Online