1. a request (spoken or written) to participate or be present or take part in something; "an invitation to lunch"; "she threw the invitation away"
(hypernym) request, asking
(hyponym) bidding, summons
(derivation) invite, pay for
2. a tempting allurement; "she was an invitation to trouble"
(hypernym) allure, allurement, temptingness
(derivation) invite, ask for