Meaning of “invitation” - Learner’s Dictionary

invitation

noun uk us /ˌɪnvɪˈteɪʃən/
INVITING SOMEONE [ C, U ]

A2 an offer from someone to do something or go somewhere:

an invitation to dinner
[ + to do sth ] He has accepted their invitation to visit China.
PIECE OF PAPER [ C ]

a piece of paper or card that invites someone to an event

CAUSE RESULT [ no plural ]

something that is likely to cause a particular result, especially a bad one:

It is an invitation to violence.

(Definition of “invitation” from the Cambridge Learner’s Dictionary © Cambridge University Press)