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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.
The condition is life-threatening, with a typical life expectancy between 10 and 20 years. Mrigakshi Dixit, Interesting Engineering, 24 Nov. 2025 Opera Bed’s study examined each state across several factors, including the prevalence of certain medical conditions and life expectancies, combining these into an overall score and ranking. Hugh Cameron, MSNBC Newsweek, 21 Nov. 2025 While families now spend 70% less time with friends than two decades ago (American Time Use Survey, 2023), having strong and secure connections can increase someone’s life expectancy by 50% (Stanford Center on Longevity, 2023). Big Think, 18 Nov. 2025 The account holder must withdraw a specific amount of money (as determined by an IRS life expectancy calculation) by December 31st of each calendar year (in most cases). Steve Hruby, Cincinnati Enquirer, 17 Nov. 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 29 Nov. 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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