(accede to the throne) to become king or queen
King George V acceded to the throne in 1925.
(accede to) to agree to a demand, proposal, request, or treaty etc, especially after first disagreeing with it
The United States has refused to accede to the Protocol.
(accede to) to become a member of an organisation
The Republic of Kiribati acceded to the WIPO convention 30 April 2013.