lifespan

noun

life·​span ˈlīf-ˌspan How to pronounce lifespan (audio)
variants or less commonly life span
plural lifespans also life-spans
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

Examples of lifespan in a Sentence

the average lifespan of house cats increase the human lifespan
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The Handsfree Series features automotive-grade lithium iron phosphate (LiFePO4) battery cells, offering over 4,000 charging cycles and a lifespan of 10 years. New Atlas, 19 Dec. 2024 Deals on Woot have a very short lifespan, and only last for a limited time, or as soon as a product sells out (usually the latter). Gabriela Vatu, PCMAG, 16 Dec. 2024 These vehicles offer lower fuel and maintenance costs compared to diesel alternatives, leading to substantial savings over their lifespan. Uyen Dang, Orlando Sentinel, 13 Dec. 2024 Nothing would do more to improve the health, lifespan and quality of life for Americans than making GLP inhibitors super low cost to the public. Amanda Castro, Newsweek, 12 Dec. 2024 The species' average lifespan in around 68 years, according to the National Oceanic and Atmospheric Administration. James Powel, USA TODAY, 8 Dec. 2024 The typical lifespan of a Laysan albatross is 68 years, according to the National Oceanic and Atmospheric Administration. CBS News, 6 Dec. 2024 Vacuum Filters Most manufacturers recommend changing a vacuum's filter every three to six months, but different types of filters have different lifespans. Alyssa Shaffer, Better Homes & Gardens, 6 Dec. 2024 This is obvious, but keeping the stand full of water can greatly extend your tree's lifespan. Cody Godwin, USA TODAY, 5 Dec. 2024

Word History

First Known Use

1831, in the meaning defined at sense 2

Time Traveler
The first known use of lifespan was in 1831

Dictionary Entries Near lifespan

Cite this Entry

“Lifespan.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lifespan. Accessed 25 Dec. 2024.

Kids Definition

life span

noun
: the average length of life of a living thing or of the persistence of a material object under specified circumstances or in a particular environment

Medical Definition

life span

noun
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

More from Merriam-Webster on lifespan

Last Updated: - Updated example sentences
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