› if someone receives an invitation, they are asked to go somewhere or do something: an invitation to sth I received an invitation to dinner at a colleague's house.an invitation to do sth He accepted the invitation to attend the seminar. decline/turn down/reject an invitation
› a formal request to do something, for example, have an interview for a job: an invitation to do sth He rarely turns down an invitation to speak at a conference. extend/issue an invitation The invitation was extended to other candidates.