[kwin-l-een, -in] 
| a colorless, liquid, water-immiscible, nitrogenous base, C9H7N, having a disagreeable odor, occurring in coal tar, and usually prepared by oxidizing a mixture of glycerol and aniline: used as a solvent and reagent and to make dyes. |
| quin·o·line (kwĭn'ə-lēn', -lĭn) n. An aromatic organic base, C9H7N, having a pungent tarlike odor, synthesized or obtained from coal tar, and used as a food preservative and in making antiseptics and dyes. |
quinoline quin·o·line (kwĭn'ə-lēn', -lĭn)
n.
An aromatic organic base synthesized or obtained from coal tar and used as a food preservative and in making antiseptics.
quinoline
any of a class of organic compounds of the aromatic heterocyclic series characterized by a double-ring structure composed of a benzene and a pyridine ring fused at two adjacent carbon atoms. The benzene ring contains six carbon atoms, while the pyridine ring contains five carbon atoms and a nitrogen atom. The simplest member of the quinoline family is quinoline itself, a compound with molecular structure C9H7N.
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lˌin