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

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 The life span of children’s clothing is too short to make sense for such a splurge. Christian Allaire, Vogue, "How Young Is Too Young to Own Designer? 11 Fashion Moms Sound Off," 12 Jan. 2019 And life span can be thought of as how well the nucleolus balances the need to grow with the need to repair, correct mistakes and make sure everything works. Joanna Klein, New York Times, "The Thing Inside Your Cells That Might Determine How Long You Live," 20 May 2018 The disks can be used only on a computer that already has a license for the Windows operating system, and the license transfers with the computer for its full life span. Tom Jackman, Washington Post, "E-waste recycler Eric Lundgren loses appeal on computer restore disks, must serve 15-month prison term," 24 Apr. 2018

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

12 Apr 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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an enemy or opponent

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