D defs.my
Entry 1 sense Webster, 1913

invitational

· IPA /ˌɪnvətˈeɪʃənəl/
01 adj. open only to persons issued an invitation; -- of gatherings, usually sports events; as, an invitational tournament.
  1. 1.
    open only to persons issued an invitation; -- of gatherings, usually sports events; as, an invitational tournament.