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A B C D E F G H I L M N O P R S T U Y Z [all]
2 entries
Life Expectancy
The average number of additional years a person could expect to live if current mortality trends were to continue for the rest of that person's life. Most commonly cited as life expectancy at birth.
Life Span
The maximum age that human beings could reach under optimum conditions.

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All terms and definitions, except where noted, are excerpted with permission from the Population Reference Bureau's International Population Handbook, by Arthur Haupt and Thomas Kane, 4th Edition, 1998.