しょはん初版shohan
1.

The very first version of a published book that is released to the public, often considered a significant milestone in an author's work.

2.

The initial publication of a text, marking the starting point for its distribution and readership, distinct from any subsequent editions or revisions.

3.

The original release of a book, which may contain unique content or characteristics that differ from later reprints or updates.

Example:

初版は10年前に出版された。