Definitions

1. noun

A sheet of paper or a page of a book containing 32 lines of verse or 64 lines of prose.

“The poet’s quarto edition of her book became a bestseller.”

2. noun

A sheet of paper with 32 lines, used as a printing unit.

“The printing press was set up to produce 1000 quarto pages per hour.”

3. adjective

Of or relating to a quarto sheet of paper or a book printed on such paper.

“The quarto format is commonly used for poetry collections.”