alizarine red

noun

often capitalized A&R

: any of various red mordant or acid dyes most of which are derived from anthraquinone: such as

a

: turkey red

b

: an orange-yellow crystalline compound C₁₄H₇NaO₇S used chiefly for dyeing and printing aluminum-mordanted wool scarlet red, as a biological stain, and as an analytical reagent (as for detecting aluminum); sodium 3-alizarin-sulfonate

called also Alizarine Carmine, Alizarine Red S, Alizarine S

Word History

First Known Use

1874, in the meaning defined above

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