Diazines'

diazine

[dahy-uh-zeen, -zin, dahy-az-een, -in]
noun Chemistry.
any of three isomeric compounds having the formula C 4 H 4 N 2 , containing a ring of four carbon atoms and two nitrogen atoms.

Origin:
diaz- + -ine2

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World English Dictionary
diazine or diazin (ˈdaɪəˌziːn, daɪˈæziːn, -ɪn, ˈdaɪəzɪn, daɪˈæzɪn)
 
n
See also pyrimidine any organic compound whose molecules contain a hexagonal ring of four carbon atoms and two nitrogen atoms, esp any of three isomers with the formula C4N2H4
 
diazin or diazin
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

diazine di·a·zine (dī'ə-zēn', dī-āz'ĭn)
n.
A compound containing a benzene ring in which two of the carbon atoms have been replaced by nitrogen atoms.

The American Heritage® Stedman's Medical Dictionary
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