Lewis Short
(adjective) : adventōrĭus, a, um, adventor
* That pertains to an arrival or to a guest, cf. adventicius: hospitium, in which strangers were received, Inscr. ap. Mur. 470, 9.
* Subst.: adventōria, ae, f. (sc. cena), a banquet given on one's arrival, Mart. 12 praef.
Charlton T. Lewis, Charles Short, A Latin Dictionary