Refers to the size of the book; the most common book size since the early 17th century, an octavo book averages about 6 x 9 inches. The term originally referred to the number of folds (8) in a standar [..]

1580s, printer's word for sheets folded to make eight leaves, from Latin in octavo "in the eighth," ablative of octavus "eighth" (see octave). Abbreviation is 8vo.

as in book

see "Book sizes".

Not to be confused with octave, above, octavo is a term from the early production of paper and vellum in the medieval period. When a single, large uncut sheet is folded once and attached to create two [..]

(revision in progress) Ode:

n. A book, or collection of paper in which the sheets are so folded as to make eight leaves.

Octavo (sometimes abbreviated to "8vo," and sometimes pronounced "eight-vo"), a term from bibliography, refers to the format of a book. An octavo is smaller than the folio and the [..]

A technical term used to indicate how many times a single printed page has been folded to make a gathering in a book. However, in modern usage it indicates the size of a modern novel, that is,...

A book approximately 7 x 10 inches in size, made by folding a full sheet of book paper in three right-angle folds, producing signatures of eight leaves (16 pages). If a 32-page section is desired, as [..]

A book of about five inches wide and eight inches tall to about six by nine inches. Octavo is the most common size for current hardcover books. To make octavo books, each sheet of paper is folded to m [..]

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

the size of a piece of paper cut eight from a sheet; also : a book, a page, or paper of this size.

(paper,printing) A sheet of paper 7 to 10 inches high and 4.5 to 6 inches wide, the size varying with the large original sheet used to create it. Made by folding the original sheet three times to pr [..]