fast red


often capitalized F&R
: any of several fast red azo dyes: such as
: a monoazo acid dye that dyes wool and silk red

called also Fast Red A

: a monoazo acid dye that dyes wool and silk claret and is used chiefly as a biological stain

called also Bordeaux B, Bordeaux red, Fast Red B

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Dictionary Entries Near fast red

Cite this Entry

“Fast red.” Dictionary, Merriam-Webster, Accessed 2 Oct. 2023.

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