Definition of "lifespan" []

• The length of time for which an organism lives. (noun)
• The length of time for which something exists or is current or valid. (noun)

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• "They die within a day; their lifespan is accelerated because time works on them differently, just as time works differently on a Galapagos tortoise and a Rattus rattus."
• "The gun and bullets are both my capacity to create something of merit and the subject matter, and my lifespan is the time in which I can go around shooting things."
• "So if researchers want to achieve big gains in lifespan and healthspan they have to go after the aging process itself."