| Quarto 1. (n.) A book of the size of the fourth of sheet of printing paper whose pages are made by folding a sheet of paper twice; in present usage, a book of a square or nearly square form, and usually of large size. Thesaurus Entries crown, duodecimo, eighteenmo, farthing, folio, fourth, fourth part, imperial, medium, octavo, octodecimo, one-fourth, quart, quarter, quartern, royal, sextodecimo, sixteenmo, super, twelvemo, twenty-five cents, twenty-five percent, two bits |