1. (noun) an acknowledgment of the truth of something (admission)
2. (noun) the act of admitting someone to enter (admission, admittance)
"The surgery was performed on his second admission to the clinic"
3. (noun) the right to enter (entree, access, accession, admission, admittance)
4. (noun) the fee charged for admission (entrance fee, admission, admission charge, admission fee, admission price, price of admission, entrance money)