eosin

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noun eo·sin \ˈē-ə-sən\

Definition of eosin

  1. 1 :  a red fluorescent dye C20H8Br4O5 obtained by the action of bromine on fluorescein and used especially in cosmetics and as a toner; also :  its red to brown sodium or potassium salt used especially as a biological stain for cytoplasmic structures

  2. 2 :  any of several dyes related to eosin

Variants of eosin

less commonly

eosine

\-sən, -ˌsēn\

Origin and Etymology of eosin

International Scientific Vocabulary, from Greek ēōs dawn


First Known Use: 1866


Medical Dictionary

eosin

play
noun eo·sin \ˈē-ə-sən\

Medical Definition of eosin

  1. 1:  a red fluorescent dye C20H8Br405 obtained by the action of bromine on fluorescein and used especially in cosmetics and as a toner; also :  its red to brown sodium or potassium salt used especially as a biological stain for cytoplasmic structures

  2. 2:  any of several dyes related to eosin

Variants of eosin

also

eosine

\-sən, -ˌsēn\play play

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