invitation - a request (spoken or written) to participate or be present or take part in something; "an invitation to lunch"; "she threw the invitation away"letter, missive - a written message addressed to a person or organization; "mailed an indignant letter to the editor" summons, bidding - a request to be present; "they came at his bidding" invite - a colloquial expression for invitation; "he didn't get no invite to the party" |