longaevitas

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.

longaevĭtas, ātis, f. [longaevus],

long life, longevity : corvorum, Macr. S. 7, 5: alicui longaevitatem indulgere, Ambros. de Caïn et Ab. 2, 10, § 37.