looseleaf; updatable binder system
Refers to a binding system where pages can be added or removed, such as looseleaf binders or updatable reference works. Common in legal and technical contexts.
This law book is a looseleaf edition, so pages can be replaced when laws are amended.
Compound of 加 (add), 除 (remove), and 式 (style/system). The term describes a system designed for adding and removing pages.