QUARTO
quarto, to
(noun) the size of a book whose pages are made by folding a sheet of paper twice to form four leaves
Source: WordNet® 3.1
Etymology
Noun
quarto (countable and uncountable, plural quartos)
(paper) A size of paper (7.5"-10" x 10"-12.5" or 190-254 x 254-312 mm). Formed by folding and cutting one of several standard sizes of paper (15"-20" x 20"-25" or 381-508 x 508-635 mm) twice to form 4 leaves (eight sides).
(UK) Quarto writing paper (10 inches x 8 inches)
(printing) A book size, corresponding to the paper size.
Synonyms
• (paper size): 4to, 4º
• (book size): Q
Anagrams
• Quatro, quatro
Source: Wiktionary
Quar"to, a. Etym: [L. in quarto in fourth, from quartus the fourth:
cf. F. (in) quarto. See Quart.]
Definition: Having four leaves to the sheet; of the form or size of a
quarto.
Quar"to, n.; pl. Quartos (.
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition