coaetaneus

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

cŏ-aetānĕus, i, m. [aetas],

one of the same age; a contemporary (post-class.), App M. 8, p. 204, 5; Tert. adv. Herm. 6; Vulg. Gal. 1, 14.