- life, lifetime, 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"
--1 is a kind of time period, period of time, period
--1 has parts:
--1 has particulars: life expectancy; afterlife, hereafterbirth; death, dying, demise; time of life; age, eld