fuchsin

Also fuch·sine
Also

[fook-sin]

noun

1. a greenish, water-soluble, solid, coal-tar derivative, obtained by the oxidation of a mixture of aniline and the toluidines, that forms deep-red solutions: used chiefly as a dye.

fuchsin

/ -sɪn, ˈfuːksɪn, ˈfuːksiːn /

noun

1. Also called: magenta. a greenish crystalline substance, the quaternary chloride of rosaniline, forming a red solution in water: used as a textile dye and a biological stain. Formula: C 20 H 19 N 3 HCl

Word History and Origins

Origin of fuchsin¹

First recorded in 1860–65; fuchs(ia) + -in ²

Word History and Origins

Origin of fuchsin¹

C19: from _fuchs ( _ia ) + _-in ; from its similarity in colour to the flower

Example Sentences

The essential features are to obtain a dry, thin layer of a selected portion of the suspected sputum, which is then to be deeply stained with fuchsin or methyl-violet; the excess of color is to be removed with nitric acid, and the preparation is then ready for examination with the microscope.

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If the bacilli are stained red with fuchsin, the background should be made blue.

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A saturated alcoholic solution of methyl-violet or fuchsin is made and filtered, and added, drop by drop, to a filtered, saturated solution of aniline oil shaken in water.

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Saturated, watery methyl-green solution is mixed with alcoholic fuchsin.

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The stain, which only requires a small fixation, is completed in a few minutes, and colours the nuclei green, the red blood corpuscles red, the protoplasm of the leucocytes fuchsin colour.

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