Header image of wall of bricks Open menu Close menu


Also azot(o)‑.

Nitrogen; the chemical radical -N=N-.

Obsolete azote, nitrogen, from French, generated from Greek a‑, without, and zōē, life (because nitrogen gas goes not support life).

Some terms in azo‑ refer generally to the presence of nitrogen, or to compounds containing nitrogen: an azide is a compound containing the unstable N3 radical, such as sodium azide, NaN3.

More specifically, the suffix refers to the presence of the group -N=N- (the azo group) in chemical compounds, for example in azobenzene, an orange-red, crystalline powder with the formula C6H5N=NC6H5.

Compounds containing azoto‑ include azotobacter, an aerobic nitrogen-fixing bacterium. In medicine, azotemia is the retention of excessive amounts of nitrogenous compounds in the blood.

See also nitro‑.

Copyright © Michael Quinion 2008–. All rights reserved. Your comments are very welcome.