Glossary

The PRINTING United Alliance Glossary serves as an excellent industry terminology resource. It is the language by which we all communicate. Without it, universal understanding would be impossible.

To keep our constituents well informed about changes to the increasingly complex industry terminology, PRINTING United Alliance has developed this glossary of terms. Definitions are for general reference only. Usage may vary between companies, individuals, or national and country customs. The information presented is as accurate as the authors and editors can ascertain and PRINTING United Alliance assumes no responsibility for the use of information presented herein.
  • Em space (em quad) (mutton) (mutt)
    Defined as a square equal in width and height to the height of the letter "m" in any size type, and used as a unit of measure for printing matter.
  • En space (N) (en quad) (nut)
    One-half the width of an em; a unit of measure in printed matter that is one half the width of an em.
  • Quad
    The addition of space to fill a line of type using an en or em block.
  • Quadracolor
    A function of some color scanners where a set of four separations is produced on a single piece of film.