Meaning of OCTAVO in English

OCTAVO

n. (pl. -os)

1. a size of book or page given by folding a standard sheet three times to form a quire of eight leaves.

2 a book or sheet of this size.

Usage:

Abbr.: 8vo.

Etymology: L in octavo in an eighth f. octavus eighth

Oxford English vocab.      Оксфордский английский словарь.