life expectancy


Definition of life expectancy

: the average life span 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 By some measures inequalities in health and life expectancy are getting worse. The Economist, "Inequality could be lower than you think," 28 Nov. 2019 This is worrying since prisons are notorious for health risks and low life expectancy. Ananya Bhattacharya, Quartz India, "Some Indian states have more than twice as many prisoners than they can house," 7 Nov. 2019 Triple negative breast cancer is considered a more aggressive, harder-to-treat cancer—and this in turn affects survival rate and life expectancy. Jessica Migala,, "Triple Negative Breast Cancer: Everything You Need to Know," 15 Oct. 2019 Still, the report jibes with other research that links wealth and life expectancy. Kate Gibson, CBS News, "Rich Americans more likely to live longer than those lower down the ladder," 9 Sep. 2019 This involves information regarding the animal’s dietary and housing requirements (like the need for a heater), life expectancy (some turtles can live over 40 years and outlive the owner so advanced planning will need to be made to rehome that pet). Iris Katz,, "Pet Wise: Can reptiles and amphibians make good pets?," 20 July 2019 Data used included poverty rate; the percentage of adults who have at least a bachelor’s degree; and average life expectancy at birth. Leada Gore |,, "The best county to live in Alabama," 24 June 2019 While there have been obvious ups and downs, life expectancy at birth overall has been steadily increasing for many years. James W Vaupel, Quartz, "How long can humans live?," 2 June 2019 After that, for every year life expectancy in the country rises, citizens would need to work for another eight months to reach retirement. Julia Horowitz, CNN, "The world's best pension system is being pushed to the brink," 21 Nov. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'life expectancy.' 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 expectancy

1848, in the meaning defined above

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Time Traveler for life expectancy

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The first known use of life expectancy was in 1848

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Statistics for life expectancy

Last Updated

8 Dec 2019

Cite this Entry

“Life expectancy.” The Dictionary, Merriam-Webster Inc., Accessed 13 December 2019.

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More Definitions for life expectancy

life expectancy


English Language Learners Definition of life expectancy

: the average number of years that a person or animal can expect to live

life expectancy


Medical Definition of life expectancy

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

life expectancy


Legal Definition of life expectancy

: the average life span of an individual

More from Merriam-Webster on life expectancy

Spanish Central: Translation of life expectancy Encyclopedia article about life expectancy

Comments on life expectancy

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easily led, controlled, or managed

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