diazo

¹

[ dahy-az-oh, -ey-zoh ]

adjective

, Chemistry.

1. containing the diazo group.

diazo-

²

Chemistry.

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

   diazomethane.

diazo

/ 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. Alsodyeline of or relating to the reproduction of documents using the bleaching action of ultraviolet radiation on diazonium salts

noun

1. a document produced by this method

Word History and Origins

Origin of diazo¹

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

Origin of diazo²

di- ¹ + azo-

Example Sentences

Ordinarily the diazo appears a little earlier than the Widal reaction—about the fourth or fifth day—but it may be delayed.

From Project Gutenberg

The result is a diazo-salt; aniline, for example, giving diazobenzene chloride, and toluidine diazotoluene chloride.

From Project Gutenberg

A new phase in the technology of tar-products was entered upon when Witt caused a diazo-salt to act upon diamidobenzene.

From Project Gutenberg

When the para-position is occupied, the diazo group takes the ortho-position.

From Project Gutenberg

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

From Project Gutenberg