OCTAVO

octavo, eightvo, vo

(noun) the size of a book whose pages are made by folding a sheet of paper three times to form eight leaves

Source: WordNet® 3.1

Etymology

From Latin.

Noun

octavo (plural octavos)

(paper, printing) A sheet of paper 7 to 10 inches (= 17.78 to 25.4 cm) high and 4.5 to 6 inches (= 11.43 to 15.24 cm) wide, the size varying with the large original sheet used to create it. It is made by folding the original sheet three times to produce eight leaves.

(printing) A book of octavo pages.

Synonyms

• (paper size): 8º, 8vo

• (book size): 8º, 8vo, O

Source: Wiktionary

Oc*ta"vo, n.;pl. Octavos. Etym: [L. in octavo; in in + octavo, abl. of octavus. See Octave.]

Definition: 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.

Oc*ta"vo, a.

Definition: Having eight leaves to a sheet; as, an octavo form, book, leaf, size, etc.

Source: Webster’s Unabridged Dictionary 1913 Edition