1. a book size resulting from folding a sheet of paper into twelve leaves, creating twenty-four pages
Usage: printing; bookbinding
2. a book of this size
Usage: printing; bookbinding

Examples

• The publisher decided to print the poetry collection in twelvemo format.
• Pocket editions were commonly produced as twelvemo books.
• The library’s rare book collection includes several 18th-century twelvemo volumes.
• Twelvemo was a popular format for novels in the Victorian era.
• The printer folded the large sheet to create a twelvemo signature.
• Small devotional books were often printed in twelvemo size for portability.