Eosin

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Eosin \E"o*sin\, n. [Gr. ? dawn.] (Chem.)
     A yellow or brownish red dyestuff obtained by the action of
     bromine on fluoresce["i]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.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  eosin
       n : a red fluorescent dye resulting from the action of bromine
           on fluorescein; used in cosmetics and as a biological
           stain for studying cell structures [syn: {bromeosin}]