excessio

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

excessĭo, ōnis, f. [excedo],

departure , death : ante excessionis diem, Hier. Orig. in Jerem. Hom. 13 fin. ; Lutat. Schol. ad Stat. Th. 4, 599.