eosine

eosin

[ee-uh-sin]
noun Chemistry.
1.
Also called bromeosin, tetrabromofluorescein. a red, crystalline, water-insoluble solid, C 20 H 8 Br 4 O 5 , 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, eosine [ee-uh-sin, -seen] .


Origin:
1865–70; < Greek ēṓs dawn (see eo-) + -in2

eosinic, adjective
eosinlike, adjective
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World English Dictionary
eosin or eosine (ˈiːəʊsɪn, -ˌsiːn)
 
n
1.  Also called: bromeosin a red crystalline water-insoluble derivative of fluorescein. Its soluble salts are used as dyes. Formula: C20H8Br4O5
2.  any of several similar dyes
 
[C19: from Greek ēōs dawn + -in; referring to the colour it gives to silk]
 
eosine or eosine
 
n
 
[C19: from Greek ēōs dawn + -in; referring to the colour it gives to silk]
 
eo'sinic or eosine
 
adj
 
'eosin-like or eosine
 
adj

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American Heritage
Medical Dictionary

eosin e·o·sin (ē'ə-sən)
n.
Any of a class of red acid dyes of the xanthene group used as cytoplasmic stains and as counterstains, especially the sodium and potassium salts of certain of these dyes.

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