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

In fact, a Danish survey of 8,700 people over 25 years found that tennis adds 9.7 years to life expectancy compared to a sedentary lifestyle. —Wes Moss, Forbes, 21 Nov. 2024

Pygmies are native to West Africa and their average life expectancy is 27 years, according to the Pygmy Hippo Foundation. —Greta Cross, USA TODAY, 13 Nov. 2024

This model also comes with high-quality sensors, while the Optical Gen 3 switches have a life expectancy of a massive 90 million clicks. —Gabriela Vatu, PCMAG, 1 Nov. 2024

Air in the city is so bad year-round that experts say residents, who already complain of itchy eyes and runny noses, may also have shorter life expectancy due to respiratory illnesses. —Mithil Aggarwal, NBC News, 1 Nov. 2024

Word History

First Known Use

1848, in the meaning defined above

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