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lifespan
noun
life·span
ˈlīf-ˌspan
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
Synonyms
Examples of lifespan in a Sentence
the average lifespan of house cats
increase the human lifespan
Recent Examples on the Web
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
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Word History
First Known Use
1831, in the meaning defined at sense 2
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
noun1
: 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
Britannica English: Translation of lifespan for Arabic Speakers
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