
1) Book format 2) Book size 3) Book size in printing 4) Certain book, sizewise 5) Four-leaved book size 6) Page size 7) Page size with four leaves 8) Paper size 9) Size
Found on
https://www.crosswordclues.com/clue/quarto

Quarto (abbreviated 4to or 4°) is a book or pamphlet produced from full `blanksheets`, each of which is printed with eight pages of text, four to a side, then folded twice to produce four leaves (that is, eight book pages). Each printed page now presents as one-fourth size of the full blanksheet. The earliest known European printed book is a qu.....
Found on
http://en.wikipedia.org/wiki/Quarto
[board game] Quarto is a board game for two players invented by Swiss mathematician Blaise Müller in 1991. It is played on a 4×4 board. There are 16 unique pieces, each of which is either: Players take turns choosing a piece which the other player must then place on the board. A player wins by placing a piece on the board which forms a ho...
Found on
http://en.wikipedia.org/wiki/Quarto_(board_game)

• (a.) Having four leaves to the sheet; of the form or size of a quarto. • (n.) Originally, a book of the size of the fourth of sheet of printing paper; a size leaves; in present usage, a book of a square or nearly square form, and usually of large size.
Found on
http://thinkexist.com/dictionary/meaning/quarto/

Refers to the size of a book; the book measures about 9 by 12 inches. Also known as 4to.
Found on
http://www.alibris.com/glossary/glossary-books

(4to). A book, made up of sheets folded into quarters, (giving eight pages)
Found on
http://www.encyclo.co.uk/local/20208

A piece of paper folded in half then half again, making quarters or 8 pages.
Found on
http://www.encyclo.co.uk/local/20829

A term from early bookmaking. When a single, large sheet is folded once to create two leaves (four p
Found on
http://www.encyclo.co.uk/local/22385
Quar'to adjective [ Latin
in quarto in fourth, from
quartus the fourth: confer F. (
in )
quarto . See
Quart .] Having four leaves to the sheet; of the form or size of a quarto.
Found on
http://www.encyclo.co.uk/webster/Q/6
Quar'to noun ;
plural Quartos Originally, a book of the size of the fourth of sheet of printing paper; a size leaves; in present usage, a book of a square or nearly square form, and usually of large size.
Found on
http://www.encyclo.co.uk/webster/Q/6

Description of the size of a book: about 12 inches high (4mo).
Found on
http://www.trussel.com/books/glossary.htm

[
n] - the size of a book whose pages are made by folding a sheet of paper twice to form four leaves
Found on
http://www.webdictionary.co.uk/definition.php?query=quarto

quarto A shortened form of Latin in quarto, 'in a fourth'; that is, of a sheet of paper, applied to a size of paper, and to a size of a printed volume. Paper is in quarto when a whole single sheet is folded twice so as to form four leaves; a book is technically termed of 'quarto' size when made up of sheets folded twice.
Found on
http://www.wordinfo.info/words/index/info/view_unit/1818/2

1. Sheet folded twice, making pages one-fourth the size of the original sheet. A quarto makes an 8-page signature.
Found on
https://www.encyclo.co.uk/local/20631
4to noun the size of a book whose pages are made by folding a sheet of paper twice to form four leaves
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.