1
a
: 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 combination
b
: 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

Word History

Etymology

International Scientific Vocabulary diaz-, diazo-, from di- + az-

First Known Use

1878, in the meaning defined at sense 1a

Time Traveler
The first known use of diazo was in 1878

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Cite this Entry

“Diazo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diazo. Accessed 3 Mar. 2025.

Medical Definition

diazo

adjective
di·​azo dī-ˈaz-(ˌ)ō How to pronounce diazo (audio)
1
: relating to or containing the group N2 composed of two nitrogen atoms united to a single carbon atom of an organic radical
2
: relating to or containing diazonium
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