life span


noun

the longest period over which the life of any organism or species may extend, according to the available biological knowledge concerning it.
the longevity of an individual.

Origin of life span

First recorded in 1915–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for lifespan

British Dictionary definitions for lifespan

life span

noun

the period of time during which a human being, animal, machine, etc, may be expected to live or function under normal conditions
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for lifespan

life span

n.

A lifetime.
The average or maximum length of time an organism, a material, or an object can be expected to survive or last.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.