The Collaborative International Dictionary
invitational
invitational \invitational\ adj. open only to persons issued an invitation; -- of gatherings, usually sports events; as, an invitational tournament.
Syn: invitation(prenominal).
Wiktionary
invitational
a. 1 Serving as an invitation; inviting. 2 (context not comparable English) Restricted to participants who have been invited. n. An event, especially a tournament, that is restricted to invited participants
WordNet
invitational
adj. only invitees are welcome; "an invitational tournament"
Usage examples of "invitational".
Nell once watched from the back of the tee at the Bay Hill Invitational in Orlando as Tiger Woods hit his drive.