noun
variant edition; alternative version; different manuscript
Used in textual criticism and bibliography for a copy of a work that differs from the standard or received text.
この古典作品には複数の異本が存在する。
There are several variant editions of this classic work.
noun
strange book; rare book; unique book
Less common; refers to a book that is unusual, rare, or one-of-a-kind. Often used in antiquarian or collector contexts.
See also: 珍本
古書店で珍しい異本を見つけた。
I found a rare book at the used bookstore.