Quarter galleys, also known as galleys, are used in the printing industry and refer to the portion of a folded sheet of paper that contains four pages. There are several synonyms for the term, including "quad," "quarto," and "4-page signature." These terms are commonly used by printers and publishers to describe the specific orientation and layout of a printed document. While the term "quarter galleys" may be less common in today's digital age, understanding its synonyms can be useful for those working in the printing industry or studying typography and graphic design.