diazo

¹ American  

[dahy-az-oh, -ey-zoh] / daɪˈæz oʊ, -ˈeɪ zoʊ /

adjective

Chemistry.

1. containing the diazo group.

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diazo- ² American  

Chemistry.

1. a combining form with the meaning “diazo group,” used in the formation of compound words.

   diazomethane.

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diazo British  

/ daɪˈeɪzəʊ /

adjective

1. of, consisting of, or containing the divalent group, =N:N, or the divalent group, -N:N- See also azo

   diazo compound

2. Also: dyeline.  of or relating to the reproduction of documents using the bleaching action of ultraviolet radiation on diazonium salts

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noun

1. a document produced by this method

Etymology

Origin of diazo¹

First recorded in 1855–60; independent use of diazo-

Origin of diazo-²

di- ¹ + azo-

Example Sentences

So I think the room where they kept the diazo machine became like my studio.

From New York Times • Feb. 27, 2020

Instead, a strip of cellophane is thoroughly impregnated with a mixture of "diazo" compounds which are closely related to dyes, but are only a faint yellow in color.

From Time Magazine Archive

Wherever light strikes, the diazo compounds are quickly and effectively bleached.

From Time Magazine Archive

The constitution of the isomeric diazo hydroxides has given rise to much discussion.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" by Various

The following Direct Colours, after being applied to cotton, may be submitted to the above treatment, the colours produced being chiefly blue, brown and black:— Blue.—Diazurine, diazo blue, diamine blue, diaminogene.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" by Various