quinoline

[ kwin-l-een, -in ]

noun

, Chemistry.

1. a colorless, liquid, water-immiscible, nitrogenous base, C 9 H 7 N, 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.

quinoline

/ ˈkwɪnəˌliːn; -lɪn /

noun

1. an oily colourless insoluble basic heterocyclic compound synthesized by heating aniline, nitrobenzene, glycerol, and sulphuric acid: used as a food preservative and in the manufacture of dyes and antiseptics. Formula: C 9 H 7 N
2. any substituted derivative of quinoline

quinoline

/ kwĭn′ə-lēn′,-lĭn /

1. An aromatic organic liquid having a pungent, tarlike odor. Quinoline is a base and is obtained from coal tar or is synthesized. It is used as a food preservative and in making antiseptics and dyes. Chemical formula: C 9 H 7 N.

Word History and Origins

Origin of quinoline¹

First recorded in 1835–45; quin(ine) + -ol ¹ + -ine ²

Example Sentences

Most of these are of a basic character, and belong to the pyridine and the quinoline series.

From Project Gutenberg

It condenses readily with aniline to give αγ-dimethyl quinoline.

From Project Gutenberg

Absence of change shows phosphine, quinoline yellow, or a natural dye-stuff.

From Project Gutenberg

Beyond the fact that when they are hydrolyzed they yield quinoline and indole, their composition is unknown.

From Project Gutenberg

This is not exactly the case with the higher groups of alkaloids—the derivatives of pyridine and quinoline.

From Project Gutenberg