(ˈ)rōz+ noun
Etymology: International Scientific Vocabulary ros- (from Latin rosa rose) + aniline — more at rose
1.
a. or rosaniline base : a white crystalline base H 2 N(CH 3 )C 6 H 3 C(OH)(C 6 H 4 NH 2 ) 2 that is the methyl derivative of pararosaniline and likewise is the parent compound of many triphenylmethane dyes — see dye table I (under Solvent Red 41 )
b. : fuchsine
2. : any of a series of bases or dyes related to rosaniline and fuchsine