Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of cinnoline is as below...

Cinnoline :: Cinnoline (n.) A nitrogenous organic base, C8H6N2, analogous to quinoline, obtained from certain complex diazo compounds..

Quinazol :: Quinazol (n.) A complex nitrogenous base related to cinnoline.

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