Source : Webster's Revised Unabridged Dictionary (1913)

Rosolic \Ro*sol"ic\, a. [Rose + carbolic.] (Chem.)
   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}.