This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The page size, from 5 by 8 inches to 6 by 9 1/2 inches, of a book composed of printer's sheets folded into eight leaves.

n. A book composed of octavo pages.

n. 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 produce eight leaves.

n. A book of octavo pages.

n. 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 8°.

adj. Having eight leaves to a sheet

Having eight leaves to a sheet; formed of sheets of paper so folded as to make eight leaves to the sheet: as, an octavo volume.

n. A book or pamphlet every section or gathering of which contains eight leaves, each leaf supposed to be one eighth of the sheet printed: usually written 8vo.

n. A sheet of paper evenly folded to make eight leaves and sixteen pages.

n. A form of type containing eight pages.

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

"In the seventh edition (1720) I find to my great solace and comfort the entry, dog, 'a well-known creature, 'a somewhat meagre definition, improved into 'a quadruped well-known' by Nathaniel Bailey, whose dictionary, first published in octavo (1721), ran through a very large number of editions and became the standard authority until superseded by Johnson."

size   

A4    A3    foolscap   

8°    8vo    O   

quarto    folio    duodecimo    junto    tyro    4to    closely-printed    black-letter    tercero    well-thumbed