tetrazone

from The Century Dictionary.

• noun In organic chemistry, a name given to a class of compounds derived from the hypothetical compound H₂N.N:N.NH₂. They are prepared by the oxidation of aikylphenylhydrazines or of diphenylhydra.zines.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Chem.) Any one of a certain series of basic compounds containing a chain of four nitrogen atoms.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun chemistry Any of a certain series of basic compounds containing a chain of four nitrogen atoms.