Definitions for quinolineˈkwɪn lˌin, -ɪn
Random House Webster's College Dictionary
quin•o•lineˈkwɪn lˌin, -ɪn(n.)
a colorless liquid nitrogenous base, C9H7N, having a disagreeable odor, occurring in coal tar: used as a solvent and reagent and to make dyes.
Origin of quinoline:
Any of a class of aromatic heterocyclic compounds containing a benzene ring fused with a ring of five carbon atoms and a nitrogen atom; especially the simplest such compound, CHN.
a nitrogenous base, C9H7N obtained as a pungent colorless liquid by the distillation of alkaloids, bones, coal tar, etc. It the nucleus of many organic bodies, especially of certain alkaloids and related substances; hence, by extension, any one of the series of alkaloidal bases of which quinoline proper is the type