quadruplicatio

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

quā̆drŭ-plĭcātĭo, ōnis, f. [quadruplico],

a making fourfold , quadruplication (post-class.): numeri, Mart. Cap. 7, § 750; so Dig. 44, 1, 2.