eosin

[ ee-uh-sin ]
/ ˈi ə sɪn /

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.
Also e·o·sine [ee-uh-sin, -seen] /ˈi ə sɪn, -ˌsin/.

Origin of eosin

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

OTHER WORDS FROM eosin

e·o·sin·ic, adjective e·o·sin·like, adjective

Words nearby eosin

eon, eonian, eonism, eop, eos, eosin, eosinopenia, eosinophil, eosinophil adenoma, eosinophil chemotactic factor of anaphylaxis, eosinophilia

Example sentences from the Web for eosin

British Dictionary definitions for eosin

eosin

eosine (ˈiːəʊsɪn, -ˌsiːn)

/ (ˈiːəʊsɪn) /

noun

Also called: bromeosin a red crystalline water-insoluble derivative of fluorescein. Its soluble salts are used as dyes. Formula: C 20 H 8 Br 4 O 5
any of several similar dyes

Derived forms of eosin

eosinic, adjective eosin-like, adjective

Word Origin for eosin

C19: from Greek ēōs dawn + -in; referring to the colour it gives to silk

Medical definitions for eosin

eosin
[ 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.