What is longevity?

  • (noun): Duration of service.
    Example: "Her longevity as a star"; "had unusual longevity in the company"
    Synonyms: length of service
    See also — Additional definitions below


The word "longevity" is sometimes used as a synonym for "life expectancy" in demography - especially when it concerns someone or something lasting longer than expected (an ancient tree, for example) - however, the two words have slightly different definitions. In a similar dichotomy to "precision" and "accuracy", "longevity" refers to the average number of years that a single person lives, whereas "life expectancy" refers to the number of years that the average population lives. This is illustrated by the fact that a drastic increase in life expectancy (due to a larger portion of the population beginning to live longer) may be accompanied by a small increase in the overall longevity of the population.

Read more about Longevity.

Some articles on longevity:

List Of Philippine Presidents By Longevity
... is a list of Philippine Presidents by longevity, as of February 8, 2013 ... Two measures of the longevity are given - this is to allow for the differing number of leap days occurring within the life of each President ...
Standard Metabolic Rate - Longevity - Organism Longevity and Basal Metabolic Rate
... The equation reveals that as ME drops below 20%, for W < one gram, MR/MPLS increases so dramatically as to endow W with virtual immortality by 16% ... The smaller W is to begin with, the more dramatic is the increase in MR as ME diminishes ...
Chengmai County - Demographics - Longevity
... Of the total 565,000 people living in the county, 18,500 are more than 80 years old, 896 of which are couples. ...
List Of Portuguese Presidents By Longevity
... This is a list of Portuguese Presidents by longevity ... Two measures of the longevity are given ... Where the person in question is still living, the longevity is calculated up to 3 February 2013 ...

More definitions of "longevity":

  • (noun): The property of being long-lived.
    Synonyms: seniority

Famous quotes containing the word longevity:

    Every thing teaches transition, transference, metamorphosis: therein is human power, in transference, not in creation; & therein is human destiny, not in longevity but in removal. We dive & reappear in new places.
    Ralph Waldo Emerson (1803–1882)