noun
authoritative edition; standard edition; revised edition
Refers to an edition of a book or manuscript that is considered definitive, often after scholarly revision or comparison of sources. Used for classic texts, collected works, and reference materials.
この全集は、最新の研究に基づいた定本です。
This complete works is the authoritative edition based on the latest research.
古典の定本を校訂する。
I collate the standard edition of the classic.
noun
final authorial version; author's revised edition
Specifically the version of a book that the author themselves edited and approved as final. Often used for literary works where the author's last revisions are preserved.
この小説の定本は、作者が晩年に改稿したものです。
The final authorial version of this novel is the one the author revised in his later years.