Longman Dictionary of Contemporary English homepage

Date: 1600-1700
Language: Late Latin
Origin: longaevitas, from Latin longaevus 'long-lived', from longus 'long' + aevum 'age'

longevity

noun
     
lon‧gev‧i‧ty [uncountable]
1 the amount of time that someone or something lives
longevity of
the greater longevity of women compared with men
The worms have a longevity of about two years.
2 long life or the long time that something lasts:
The ancient Chinese claimed that garlic promoted longevity.
3 the amount of time that something lasts
longevity of
the longevity of an athlete's career

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