diazotype
noun
di·az·o·type
\-ˌtīp\
Definition of diazotype
: a photograph or photocopy produced on a surface (as paper) by coating with a solution containing a diazo compound that is decomposed on exposure to light, the compound in the unexposed parts being then converted to a colored image formed by an azo dye by developing especially with an alkaline solution or gaseous ammonia
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Origin and Etymology of diazotype
diaz- + -type
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