life span


Definition of life span

1 : the average length of life of a kind of organism or of a material object especially in a particular environment or under specified circumstances
2 : the duration of existence of an individual

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Examples of life span in a Sentence

the average life span of house cats increase the human life span

Recent Examples on the Web

Because the life span of a product now is much shorter, the attention span of a lot of consumers is much shorter as well. Cheryl Wischhover, Vox, "The “best” lipstick probably won’t change your life — but the search for it can," 12 Dec. 2018 Small studies suggest that these ingredients can affect coral’s ability to reproduce by harming or killing coral larvae and even reduce its life span and immunity. Jessica Chia, Allure, "The Sunscreen Glossary: A Comprehensive Guide to Everything You Need to Know About SPF," 4 May 2019 Then there was a 2014 review in Contraception analyzing 12 papers on IUD life spans. Korin Miller, SELF, "When Is It OK to Get Your IUD Removed?," 12 Mar. 2019 That resulted in her florist choosing flowers with a life span long enough to last through the rehearsal dinner and wedding, and the top-dollar stationer Engaging Invites designing a handful of thank you cards rather than invitations. New York Times, "She Wanted Lavish, He Was Fine With City Hall," 8 June 2018 Keith Couch, CRC’s project director, told MWAA’s board of directors that the company would deal with the issue by treating the panels every 10 years with a sealant to ensure materials meet the 100-year life span required in their contract. Washington Post, "Metro says it will do independent inspections of Silver Line concrete," 17 May 2018 While some animal welfare groups push for protecting rare species like polar bears in their natural habitat, other groups, like Polar Bears International, say rearing them in captivity allows the animals to have longer life spans. Marian Liu, CNN, "UK to get first glimpse of polar bear cub," 21 Mar. 2018 Zarya was originally designed with an operational life span of 15 years, but in 2013, a team of Russian engineers cleared it to remain in space through 2028. Kevin Dupzyk, Popular Mechanics, "What ISS Taught Us In the Past 20 Years," 20 Nov. 2018 The 8,000-hour life span is about typical for combat aircraft, with the F-15 and F-16 fighters originally rated for 8,000 and 9,000 hours, respectively. Kyle Mizokami, Popular Mechanics, "Some F-35s Could Become Unflyable by 2026," 1 Feb. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'life span.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of life span

1831, in the meaning defined at sense 2

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Statistics for life span

Last Updated

7 Jun 2019

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Time Traveler for life span

The first known use of life span was in 1831

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More Definitions for life span

life span


English Language Learners Definition of life span

: the amount of time that a person or animal actually lives

life span

\ ˈlīf-ˌspan How to pronounce life span (audio) \

Medical Definition of life span

1 : the duration of existence of an individual
2 : the average length of life of a kind of organism or of a material object especially in a particular environment or under specified circumstances

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More from Merriam-Webster on life span

Rhyming Dictionary: Words that rhyme with life span

Thesaurus: All synonyms and antonyms for life span Encyclopedia article about life span

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