kwə̇ˈnäksəˌlēn, -_lə̇n noun
also qui·nox·a·lin -_lə̇n
( -s )
Etymology: International Scientific Vocabulary quin- + gly oxal + -ine or -in
1. : a crystalline feebly basic compound C 8 H 6 N 2 made by condensing ortho phenylenediamine with glyoxal and regarded as derived from quinoline by substitution of a nitrogen atom for a methylidyne group in the 4-position
2. : a derivative of quinoxaline