Dictionary

life expectancy

life expectancy

noun

: the average number of years that a person or animal can expect to live

Full Definition of LIFE EXPECTANCY

:  the average life span of an individual

Examples of LIFE EXPECTANCY

  1. improvements in diet that have resulted in greater life expectancy for many people
  2. calculating the life expectancies of different social groups

First Known Use of LIFE EXPECTANCY

1935

life expectancy

noun    (Medical Dictionary)

Medical Definition of LIFE EXPECTANCY

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

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