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.

noun

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

n.

1. The number of years that one is expected to live as determined by statistics.