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Definition of Lifespan
1. Noun. The period during which something is functional (as between birth and death). "He lived a long and happy life"
Exact synonyms: Life, Life-time, Lifetime
Generic synonyms: Period, Period Of Time, Time Period
Terms within: Birth, Death, Demise, Dying, Time Of Life, Age, Eld
Specialized synonyms: Afterlife, Hereafter
Derivative terms: Lifer
Generic synonyms: Period, Period Of Time, Time Period
Terms within: Birth, Death, Demise, Dying, Time Of Life, Age, Eld
Specialized synonyms: Afterlife, Hereafter
Derivative terms: Lifer
Definition of Lifespan
1. a lifetime [n -S] - See also: lifetime
Medical Definition of Lifespan
1. 1. The duration of life of an individual. 2. The normal or average duration of life of members of a given species. See: longevity. (05 Mar 2000)