(ˈ)rō|zälik-, -zōlik- noun
Etymology: rosolic from German rosol- (in rosolsäure rosolic acid) (from ros- — from Latin rosa rose — + -ol- — from Latin oleum oil) + English -ic — more at rose , oil
: either of two phenolic quinonoid derivatives of triphenylmethane:
a. : a crystalline compound that is red by transmitted light, that is made usually from a mixture of phenol and ortho -cresol or from rosaniline, and that differs from aurin in containing one or possibly two methyl groups — called also coralline
b. : aurin