The Collaborative International Dictionary
Wiktionary
a. (context chemistry English) of an organic compound containing a pair of double bonded nitrogen atoms directly attached to an aryl group
WordNet
adj. relating to or containing diazonium
[also: diazoes (pl)]
Wikipedia
Diazo refers to a type of organic compound called diazo compound that has two linked nitrogen atoms ( azo) as a terminal functional group. The general formula is RC=N. The simplest example of a diazo compound is diazomethane. The electronic structure of diazo compounds involves a positive charge on the central nitrogen and negative charge distributed between the terminal nitrogen and the carbon. Some of the most stable diazo compounds are α-diazo-ß-diketones and α-diazo-ß-diesters since the negative charge is delocalized into the carbonyls. In contrast, most alkyldiazo compounds are explosive. A commercially relevant diazo compound is ethyl diazoacetate (NCHCOOEt). A group of isomeric compounds with only few similar properties are the diazirines, where the carbon and two nitrogens are linked as a ring.
Four resonance structures can be drawn:
Diazo compounds should not be confused with azo compounds of the type R-N=N-R or with diazonium compounds of the type R-N.
Diazo, previously named xdv, is a general-purpose, open source website theming tool. It is written in Python and generates XSLT. Diazo creates a separation between theme pages (static HTML) and transformation rules (Diazo's own domain specific language based in XML), allowing web designers to work on templates in plain HTML, without knowledge of XSLT or special template-related codes.
Diazo creates a themed site by using user-defined rules to combine vanilla content from a dynamic website together with a static HTML theme. The rules file (conventionally named rules.xml) has directives which, for example, may replace the contents of an HTML node in the theme with the contents of one in the content.
Usage examples of "diazo".
This light bleaches out all the dye on the diazo paper underneath except for the parts under the lines on the master drawing.
The diazo paper is then developed in hot ammonia fumes, and the lines of dye emerge, turning dark.
But from George’s point of view all he wanted was solid lines on transparent material, to make a diazo print.
When he’d written, he had put his letter over diazo paper and exposed it to light, and immediately stored the exposed paper in the light-proof envelope.
The regular reprints and also the black-and-white glossy reproductions of Dana den Relgan’s drugs list and the letter I’d found on the diazo paper.
But from George's point of view all he wanted was solid lines on transparent material, to make a diazo print.
When he'd written it, he had put his letter over diazo paper and exposed it to light, and immediately stored the exposed paper in the light-proof envelope.