noun
: an expected number of years of life based on statistical probability
the normal life expectancy in the United States has been raised — G.R.Cowgill
the life expectancy of the average new book — David Dempsey
— called also expectation of life
noun
: an expected number of years of life based on statistical probability
the normal life expectancy in the United States has been raised — G.R.Cowgill
the life expectancy of the average new book — David Dempsey
— called also expectation of life
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012