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.
  • Neutral
    (1) Any color that has no hue such as white, gray, and black; (2) the absence of acid or alkaline activity in a material having a pH of 7; (3) the presence of an equal concentration of hydrogen and hydroxyl ions.
  • Neutral atmosphere
    An atmospheric condition in a firing kiln that is neither strongly oxidizing or reducing.
  • Neutral pH paper
    An acid-free paper.
  • Neutral-density filter
    A camera filter that uniformly reduces all colors of light striking the lens.