Definition of invitation noun from the Oxford Advanced American Dictionary

      

    invitation

     noun
    noun
    NAmE//ˌɪnvəˈteɪʃn//
     
     
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  1. 1[countable] a spoken or written request to someone to do something or to go somewhere to issue/extend an invitation to accept/turn down/decline an invitation invitation to something an invitation to the party invitation to do something I have an open invitation (= not restricted to a particular date) to visit my friend in Japan.
  2. 2[uncountable] the act of inviting someone or of being invited A concert was held at the invitation of the mayor. Admission is by invitation only.
  3. 3[countable] a card or piece of paper that you use to invite someone to something Have you ordered the wedding invitations yet?
  4. 4[singular] invitation to somebody (to do something) invitation to something something that encourages someone to do something, usually something bad Leaving the doors unlocked is an open invitation to burglars.
See the Oxford Advanced Learner's Dictionary entry: invitation