acid dye

noun Chemistry.

any of a class of dyes containing one or more acidic groups, as the sulfo group: used in acid solution chiefly for dyeing wool and silk.

Origin of acid dye

First recorded in 1885–90

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British Dictionary definitions for acid dye

acid dye

noun

a dye in which the chromophore is part of a negative ion usually applied from an acidic solution

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

acid dye in Medicine

acid dye

Any of a class of dyes that contain acidic groups, usually in the form of sodium or potassium salts, and are used in staining cytoplasm and various acidophilic structures of cells or tissues.acid stain