lifetime

Noun
  1. The period during which something is functional (as between birth and death) (synset 115165365)
    "the battery had a short life"; "he lived a long and happy life"
    is a type of: period, period of time, time period - an amount of time
    subtypes: afterlife, hereafter - life after death
    has:
    • birth - the time when something begins (especially life)
    • death, demise, dying - the time when something ends
    • time of life - a period of time during which a person is normally in a particular life state
    • age, eld - a time of life (usually defined in years) at which some particular qualification or power arises
    same as: life, life-time, lifespan

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