Paper folded to form a part of a book or booklet.

A folded sheet of paper forming part of a book; sections are sometimes made of insetted folded sheets of four, eight sixteen or more pages.

A printed, folded sheet of 4, 8, 16, or 32 pages, which is collated with other sections to form a book block. Also known as a signature.

Sheets of printed pages which, when folded, become part of a publication.

Also known as a gathering or signature - sections consist of folded group of pages to be sewn through the centre folds

a printed sheet folded to make a multiple of pages.

A sheet folded to create four or more book pages.

A group of 4, 8, 16, 24, 32, etc., pages folded as a unit; also called Signature. to top

the unit of folded pages produced by the printing or folding machine, most often 32 pages, which is then sewn together to make a book block or gathered for perfect binding.

A folded sequence of pages forming part of a book. Sometimes called a "signature."