quadrimenstruus

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

quā̆drĭmenstrŭus, a, um, adj. [quattuor-mensis],

of four months (late Lat.), Cod. Just. 1, 32, 1; Cod. Th. 12, 6, 27, § 1.