Eosin
Pronunciation : E"o*sin
Part of Speech : n.
Etymology : [Gr. (Chem.)
Definition : Defn: A yellow or brownish red dyestuff obtained by the action of bromine on fluoresce?n, and named from the fine rose-red which it imparts to silk. It is also used for making a fine red ink. Its solution is fluorescent.
Source : Webster's Unabridged Dictionary, 1913