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quinoxaline

[kwi-nok-suh-leen, -lin]
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noun Chemistry.
  1. a colorless, crystalline, water-soluble powder, C8H6N2, used chiefly in organic synthesis.
Also quin·ox·a·lin [kwi-nok-suh-lin] /kwɪˈnɒk sə lɪn/.

Origin of quinoxaline

1880–85; quin(ine) + (gly)oxal + -ine2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018