Media wedge
A media wedge is a test pattern used in the printing industry and in colour management and consists of colour patches with defined colour values.
Lexicon
Mediabox
The Mediabox is the largest of the five box sizes of a PDF file. Other box sizes are: Cropbox, Bleedbox, Trimbox and Artbox.
Metamerism
The term metamerism is understood as the effect that two things may look the same under one light, but completely different under another light.