diazo

Definitions

Construction

  • A group of chemical compounds, such as benzenediazo hydroxide or diazomethene, generally used as a light-sensitive emulsion on a support such as paper or plastic. When this material is exposed, as in a photographic process by the passage of light through an original drawing and developed by reaction of a coupler (either an acid compound or alkaline agent), an image called a whiteprint is produced.

Media Studies

  • noun a photograph or photocopy made using the diazotype process.
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