quarto

Meanings

1. 1
   noun

   a book or page format made by folding a full sheet twice to create four leaves, or eight pages

   The printer folded each sheet twice to produce a quarto gathering.

2. 2
   noun

   a book produced in quarto format

   The archive holds the treatise in a slim seventeenth-century quarto.

From Latin in quarto ('in a fourth'), based on quartus ('fourth'). A printer made the format by folding a sheet into four leaves, each leaf being one quarter of the original sheet.

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