life expectancy

noun

: the average lifespan of an individual

Examples of life expectancy in a Sentence

improvements in diet that have resulted in greater life expectancy for many people calculating the life expectancies of different social groups
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.
Overall, life expectancy ranged from as high as 83 years in high-income regions to as low as 62 years in sub-Saharan Africa, IHME found. Deidre McPhillips, CNN Money, 12 Oct. 2025 Bowman could not be reached for comment The money will help the city replace water lines, some of which are 30 to 40 years past their normal life expectancy, according to John Edwards, general counsel and economic development director for Helena-West Helena/Phillips County Port Authority. Arkansas Online, 10 Oct. 2025 The result has been that Americans spend more on health care than other developed countries, but have shorter average life expectancies. Bobby Jindal, MSNBC Newsweek, 10 Oct. 2025 Also commonly referred to as Lou Gehrig’s disease, ALS is a degenerative disease that impacts the motor neurons of the brain and spinal cords, with a life expectancy of two to five years after symptoms first begin. Ct Jones, Rolling Stone, 9 Oct. 2025 See All Example Sentences for life expectancy

Word History

First Known Use

1848, in the meaning defined above

Time Traveler
The first known use of life expectancy was in 1848

Browse Nearby Words

Cite this Entry

“Life expectancy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/life%20expectancy. Accessed 19 Oct. 2025.

Kids Definition

life expectancy

noun
: the number of years that an individual or group of a certain age can expect to live on the average based on experience in the past for individuals or groups of the same kind

Medical Definition

life expectancy

noun
: an expected number of years of life based on statistical probability

Legal Definition

life expectancy

noun
: the average life span of an individual

More from Merriam-Webster on life expectancy

Last Updated: - Updated example sentences
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