1. a book size produced by folding a sheet of paper twice to create four leaves or eight pages
Usage: printing; bookbinding
2. a book or manuscript of quarto size

Examples

• The rare Shakespeare quarto was valued at thousands of dollars.
• The publisher decided to print the novel in quarto format.
• She collected first edition quartos from the 17th century.
• The library’s quarto collection included many historical texts.
• The manuscript was bound in quarto size for easier handling.
• Quartos were a popular book format during the Renaissance.