INDULINE

Etymology

Noun

induline (plural indulines)

(organic compound) Any of a series of blue, bluish-red and black dyestuffs, formed by the interaction of para-amino azo compounds with primary monoamines in the presence of a small quantity of a mineral acid.

Source: Wiktionary


In"du*line, n. Etym: [Perh. fr. indigo.] (Chem.) (a) Any one of a large series of aniline dyes, colored blue or violet, and represented by aniline violet. (b) A dark green amorphous dyestuff, produced by the oxidation of aniline in the presence of copper or vanadium salts; -- called also aniline black.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

22 May 2025

BOLLARD

(noun) a strong post (as on a wharf or quay or ship for attaching mooring lines); “the road was closed to vehicular traffic with bollards”


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Coffee Trivia

The average annual yield from one coffee tree is the equivalent of 1 to 1 1/2 pounds of roasted coffee. It takes about 4,000 hand-picked green coffee beans to make a pound of coffee.

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