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