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Eosin
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4 dictionary results for: Eosin
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
e·o·sin       [ee-uh-sin] Pronunciation Key
–noun Chemistry.
1.Also called bromeosin, tetrabromofluorescein. a red, crystalline, water-insoluble solid, C20H8Br4O5, derived from fluorescein by bromination: used chiefly as an acid dye for dyeing silk a rose red color and as a histological stain.
2.any of a variety of eosinlike dyes.
Also, e·o·sine       [ee-uh-sin, -seen] Pronunciation Key.

[Origin: 1865–70; < Gk és dawn (see eo-) + -in2]

—Related forms
e·o·sin·ic, adjective
e·o·sin·like, adjective
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
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American Heritage Dictionary - Cite This Source - Share This
e·o·sin       (ē'ə-sən)  Pronunciation Key 
n.  
  1. A red crystalline powder, C20H8O5Br4, used in textile dyeing and ink manufacturing and in coloring gasoline.
  2. The red sodium or potassium salt of this powder, used in biology to stain cells.


[Greek ēōs, dawn (from its color); see aus- in Indo-European roots + -in.]

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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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WordNet - Cite This Source - Share This
eosin

noun
a red fluorescent dye resulting from the action of bromine on fluorescein; used in cosmetics and as a biological stain for studying cell structures 

WordNet® 3.0, © 2006 by Princeton University.
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Webster's Revised Unabridged Dictionary - Cite This Source - Share This

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.

Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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