having rings that open and close permitting insertion and removal of pages; -- of notebooks and binders and the paper used in them; as, a looseleaf notebook; looseleaf paper.

Also known as ring-bound. Bound so that pages are easily added, removed, or relocated in the book.

Loose-leaf publications are so named because the pages can be easily removed from a binder-like holder and replaced by pages with updated information. Loose-leaf volumes are usually updated quite frequently. Some loose-leaf services contain primary material only such as legislation whereas others contain commentary and other secondary source material.