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- Dictionarylife span
noun
- 1. the length of time for which a person or animal lives or a thing functions: "the human life span"
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- Life expectancy
Statistical measure of how long a person or organism may live, based on factors of their life
Human life expectancy is a statistical measure of the estimate of the average remaining years of life at a given age. The most commonly used measure is life expectancy at birth (LEB, or in demographic notation e0, where ex denotes the average life remaining at age x). This can be defined in two ways. Cohort LEB is the mean length of life of a birth cohort (in this case, all individuals born in a g... Wikipedia
