释义 |
fast red noun Usage: often capitalized F&R : any of several fast red azo dyes: as a. : a monoazo acid dye that dyes wool and silk red — called also Fast Red A; see dye table I (under Acid Red 88) b. : 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; see dye table I (under Acid Red 17) |