Definition of longevity noun from the Oxford Advanced Learner's Dictionary

 

longevity

 noun
noun
BrE BrE//lɒnˈdʒevəti//
 
; NAmE NAmE//lɔːnˈdʒevəti//
 
, NAmE//lɑːnˈdʒevəti//
 
[uncountable](formal)
 
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long life; the fact of lasting a long time We wish you both health and longevity. He prides himself on the longevity of the company. Word Origin early 17th cent.: from late Latin longaevitas, from Latin longus ‘long’ + aevum ‘age’.
See the Oxford Advanced American Dictionary entry: longevity