Pronunciation: meth'il vi'o-let
Mixtures of tetra-, penta-, or pararosanilin that vary in shade of violet depending on the extent of methylation (designated R for reddish shades, B for bluish shades); the hexamethyl compound is known as crystal violet, the pentamenthyl compound as methyl violet 6B. methyl violet stains have many bacteriologic, histologic, and cytologic applications.
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Examples: glitazone, GI cocktail, etc.