duodecimo

Definitions

1. 1.Having twelve leaves to a sheet; as, a duodecimo from, book, leaf, size, etc.
2. 2.A book consisting of sheets each of which is folded into twelve leaves; hence, indicating, more or less definitely, a size of a book; -- usually written 12mo or 12º.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

Related questions

• What does "duodecimo" mean?

Reverse-dictionary questions

Definition-first questions whose answer is duodecimo.

• What is having twelve leaves to a sheet; as, a duodecimo from, book, leaf, size, etc called?
• What is a book consisting of sheets each of which is folded into twelve leaves; hence, indicating, more or less definitely, a size of a book; -- usually written 12mo or 12º called?