n.
Pronunciation: län- ' je-v ə -t ē , lo ̇ n-
Function: noun
Etymology: Late Latin longaevitas, from Latin longaevus long-lived, from longus longitude + aevum age ― more at AYE
Date: 1615
1 a : a long duration of individual life b : length of life <a study of longevity >
2 : long continuance : PERMANENCE , DURABILITY