
1) Chemical compound 2) Compound
Found on
https://www.crosswordclues.com/clue/triazine

A triazine is class of nitrogen-containing heterocycles. The parent molecules have the molecular formula is {carbon}3{hydrogen}3{nitrogen}3. They exist in three isomeric forms: 1,3,5-triazines, being common. == Structure == The triazines have planar six-membered benzene-like ring but with three carbons replaced by nitrogens. The three isomers of t...
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http://en.wikipedia.org/wiki/Triazine

<chemical> An herbicide used to kill broad-leafed plants. ... (09 Oct 1997) ...
Found on
http://www.encyclo.co.uk/local/20973
noun any of three isomeric compounds having three carbon and three nitrogen atoms in a six-membered ring
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.