1. a request (spoken or written) to participate or be present or take part in something (Freq. 5) - an invitation to lunch - she threw the invitation away • Derivationally related forms: invitational, invite • Hypernyms: request, asking, letter, missive • Hyponyms: bidding, summons, invite 2. a tempting allurement - she was an invitation to trouble • Derivationally related forms: invite • Hypernyms: allure, allurement, temptingness