noun which may take the genitive case particle 'no', noun
over capacity; overcrowded; overbooked
Describes a situation where the number of people or things exceeds the set limit, such as in a room, vehicle, or reservation system. Often used with になる or as a の-adjective.
The elevator was over capacity, so I waited for the next one.
This tour is fully booked, so we have closed applications.
Compound of 定員 (capacity, fixed number of people) and オーバー (over, from English).