Definition of quinoxaline in US English:

quinoxaline

(also quinoxalin)

noun

Chemistry
  • A weakly basic, crystalline, heterocyclic compound first prepared by reaction of glyoxal and o-phenylenediamine and used in organic synthesis.

Origin

Late 19th century; earliest use found in Journal of the Chemical Society. From German Chinoxalin from Chin- (in Chinolin) + -oxal (in Glyoxal) + -in, so called on account of its structural similarity to quinoline and its preparation from glyoxal.

Pronunciation

quinoxaline

/kwɪˈnɒksəliːn/