octavo

Definitions

1. 1.A book composed of sheets each of which is folded into eight leaves; hence, indicating more or less definitely a size of book so made; -- usually written 8vo or 8º.
2. 2.Having eight leaves to a sheet; as, an octavo form, book, leaf, size, etc.

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

Related questions

• What does "octavo" mean?

Reverse-dictionary questions

Definition-first questions whose answer is octavo.

• What is a book composed of sheets each of which is folded into eight leaves; hence, indicating more or less definitely a size of book so made; -- usually written 8vo or 8º called?
• What is having eight leaves to a sheet; as, an octavo form, book, leaf, size, etc called?