life expectancy

noun

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 In comparison, smoking cigarettes cuts life expectancy by about 1.9 years, while drinking alcohol reduces it by eight months. Claire Parker, Washington Post, 15 June 2022 For the past two decades, life expectancy in the United States has stalled. Robert Pearl, Forbes, 13 June 2022 The average life expectancy is set to rise from 72.3 years to 76.8 years by 2050, according to Bank of America. Declan Harty, Fortune, 10 June 2022 The person whose life expectancy is used to determine annuity income benefits. Lori Ioannou, WSJ, 4 June 2022 Quokkas' life expectancy is about 10 years, and female quokkas can produce 17 offspring over a lifetime, with two joeys born each year, according to the Australian Museum. Kristen Rogers, CNN, 8 May 2022 The average age of Supreme Court justices at the time of their appointment has remained stable since the late 1700s at about 50 to 55, but life expectancy since then has soared. Michael Hiltzik, Los Angeles Times, 4 May 2022 An early analysis, which has not yet been peer reviewed, found that the country's life expectancy dropped even further in 2021, following a loss of around two years in 2020. NBC News, 22 Apr. 2022 Some experts are skeptical that life expectancy will quickly bounce back. Mike Stobbe, chicagotribune.com, 12 Apr. 2022 See More

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.

First Known Use of life expectancy

1848, in the meaning defined above

Learn More About life expectancy

Time Traveler for life expectancy

Time Traveler

The first known use of life expectancy was in 1848

See more words from the same year

Dictionary Entries Near life expectancy

life everlasting

life expectancy

life experience

See More Nearby Entries 

Statistics for life expectancy

Last Updated

23 Jun 2022

Cite this Entry

“Life expectancy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/life%20expectancy. Accessed 4 Jul. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for life expectancy

life expectancy

noun

Medical Definition of life expectancy

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

life expectancy

noun

Legal Definition of life expectancy

: the average life span of an individual

More from Merriam-Webster on life expectancy

Britannica.com: Encyclopedia article about life expectancy

WORD OF THE DAY

Test Your Vocabulary

Name That Food

  • a-light
  • Name these cookies!
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!