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.
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Origin of life span
First recorded in 1915–20
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for life span
He acquired all sorts of magic powers by means of which he extended his life-span.
The Chinese Fairy Book|VariousNow, of course, shortened working hours and medical advances have equalized the life-span.
This Crowded Earth|Robert BlochThat's where the men astern would find use for the life-span.
The Iron Boys on the Ore Boats|James R. MearsAs to the life-span itself there is reason to suppose that it is meant to be more regular than man allows it to become.
The Conquest of Fear|Basil King
British Dictionary definitions for life span
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
Medicine definitions for life span
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.