eosin

noun eo·sin \ ˈē-ə-sən \
variants: or less commonly eosine play \ˈē-ə-sən, -ˌsēn\

Definition of eosin

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 : any of several dyes related to eosin

Origin and Etymology of eosin

International Scientific Vocabulary, from Greek ēōs dawn


Medical Dictionary

eosin

noun eo·sin \ ˈē-ə-sən \
variants: also eosine play \-sən, -ˌsēn\

medical Definition of eosin

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 : any of several dyes related to eosin

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