ROSOLIC

Ro*sol"ic, a. Etym: [Rose + carbolic.] (Chem.)

Definition: Pertaining to, or designating, a complex red dyestuff (called rosolic acid) which is analogous to rosaniline and aurin. It is produced by oxidizing a mixture of phenol and cresol, as a dark red amorphous mass, C20H16O3, which forms weak salts with bases, and stable ones with acids. Called also methyl aurin, and, formerly, corallin.

Source: Webster’s Unabridged Dictionary 1913 Edition