Meaning of DIAZO in English

n. (in full diazotype) a copying or colouring process using a diazo compound decomposed by light.

Phrases and idioms:

diazo compound Chem. a chemical compound containing two usu. multiply-bonded nitrogen atoms, often highly coloured and used as dyes.

Etymology: DI-(1) + AZO-

Oxford English vocab.      Оксфордский английский словарь.