noun
: any of a small class of basic dyes containing the acridine nucleus, most of them being yellow, orange, red, or brown, that are fluorescent in solution and are used chiefly for dyeing leather and mordanted cotton
noun
: any of a small class of basic dyes containing the acridine nucleus, most of them being yellow, orange, red, or brown, that are fluorescent in solution and are used chiefly for dyeing leather and mordanted cotton
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012