Definition of invite noun from the Oxford Advanced Learner's Dictionary

BrE BrE//ˈɪnvaɪt//
 
; NAmE NAmE//ˈɪnvaɪt//
 
(informal) an invitation Thanks for your invite.
Word Origin mid 16th cent.: from Old French inviter, or from Latin invitare.
See the Oxford Advanced American Dictionary entry: invite