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cyanogen Syllabification: cy·a·no·gen
Pronunciation: /sīˈanəjən/

Definition of cyanogen in English:


A colorless, flammable, highly poisonous gas made by oxidizing hydrogen cyanide. One of the pseudohalogens, cyanogen is an intermediate in fertilizer manufacture.
  • Chemical formula: C2N2
Example sentences
  • The spectra that are observed indicate that small molecules, such as cyanide, methane, and cyanogen, can assemble in outer space.
  • Cytosine can be formed by reacting cyanoacetylene with cyanate, cyanogen or urea, and uracil can be produced by the hydrolysis of cytosine.
  • Years earlier scientists had detected cyanogen, a poisonous gas, in the tail of a comet.


Early 19th century: from French cyanogène, from Greek kuanos 'dark blue mineral' + -gène (see -gen), so named because it is a constituent of Prussian blue.

Definition of cyanogen in:
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