permitialis

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

permĭtĭālis, e, adj. [permities],

fatal , destructive , ruinous : id quod nusquam sine permitiali Discidio potis est sejungi, Lucr. 1, 451 Munro (Lachm. perniciali).