noun
: any of a class of usually yellow to orange direct cotton azo dyes derived from stilbene ; also : any of various fluorescent brighteners derived from stilbene
noun
: any of a class of usually yellow to orange direct cotton azo dyes derived from stilbene ; also : any of various fluorescent brighteners derived from stilbene
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012