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eosin

[ee-uh-sin]

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noun Chemistry.

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.

any of a variety of eosinlike dyes.

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Also, e·o·sine

[ee-uh-sin, -seen] .

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

Related forms

e·o·sin·ic, adjective

e·o·sin·like, adjective

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Eosin is always a great word to know.

So is labile. Does it mean:

a compound capable of changing state or becoming inactive when subjected to heat or radiation

having an unsymmetrical arrangement of atoms in a molecule, or noting a carbon atom bonded to four different atoms or groups

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Collins

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*

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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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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Related Words

bromeosin eosinophil

eosinophilic tetrabromofluorescein

Quote Of The Day

"Good writing is always a breaking of the soil, clearing away prejudices, pulling up of sour weeds of crooked thinking, stripping the turf so as to get at what is fertile beneath. It would be amusing to carry the simile further. Those bulbs that flower in the sand and wither! The gay fiction annual that has to be planted again every year! Those experimental plants from Russia, France, and Greenwich Village that are always getting winter killed—confound 'em!—is it worth while planting them again? The stocky perennial that keeps coming up and coming up—so easy to grow and so ugly. Scarlet sage that gives a touch of fiery sin to the edge of the suburbanite's concrete walk! And then the good flowers—as honest as they are beautiful! The well-ordered gar den! The climbing rose that escapes and is the most beautiful of all!"

-Henry Seidel Canby

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