Definition of diazo
1a : relating to or containing the group N2 composed of two nitrogen atoms united to a single carbon atom of an organic radical —often used in combinationb : relating to or containing diazonium —often used in combination
2 : of or relating to a photograph or photocopy whose production involves the use of a coating of a diazo compound that is decomposed by exposure to light
Origin and Etymology of diazo
International Scientific Vocabulary diaz-, diazo-, from di- + az-
First Known Use: 1878
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