three-quarter-bound

adjective

three-quar·​ter-bound ˈthrē-ˈk(w)ȯ(r)-tər-ˌbau̇nd 

of a book

: bound like a half-bound book but having the material on the spine extended to cover about one third of the boards

three-quarter binding noun

Word History

First Known Use

circa 1951, in the meaning defined above