1. The right to enter; permission to enter: Admittance to the conference was by invitation only.
2. Permission to enter or the right of entry: Melvin and Dawn felt that they should also have the privilege of being allowed admittance to the business meeting.

It is often maintained that admittance should be used only to refer to achieving physical access to a place as the following example shows: Shirley was denied admittance to the restaurant because all of the tables were taken and so there was no place for her to be seated.

Joe's admittance to the club was denied because he was not a member.

It was easy for Karen to secure admittance to the public library, however she soon found several doors marked: "Admittance for staff members only."