accession
🇺🇸
/əkˈseʃn/
🇬🇧
/əkˈseʃn/
The act of taking a position of authority or power, like becoming a king or queen.
When the old king died, Prince William's accession to the throne was celebrated by all.
The act of a country joining an international organization, like the United Nations.
The accession of the new countries to the European Union was a historic event.
An item that is added to a collection, like a new book in a library or a new painting in a museum.
The museum celebrated the accession of the famous painting to their collection.