momentarius

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

mōmentārĭus, a, um, adj. [momentum],

I brief, of brief duration, momentary; quick (postclass.): maritus, i. e. who stays but a short time , Ap. Met. 5, 12, 9; vita, id. ib. 2, 29, 7; cura, Dig. 34, 1, 8.—

II Transf., instantaneous : venenum, that operates quickly , Ap. Met. 10, 25, 14.