life expectancy

noun

1. the probable number of years remaining in the life of an individual or class of persons determined statistically, affected by such factors as heredity, physical condition, nutrition, and occupation.

life expectancy

noun

1. Also called: expectation of life. the statistically determined average number of years of life remaining after a specified age for a given group of individuals

Word History and Origins

Origin of life expectancy¹

First recorded in 1930–35

Related Words

• longevity