also: じょうせいほん
noun
hardcover book; hardback book
Refers to a book bound with a stiff cover, as opposed to a paperback (並製本). Common in publishing and library contexts.
この小説は上製本と文庫本の両方で出ている。
This novel is available in both hardcover and paperback.
図書館では上
In libraries, hardcover books last longer.