Is “Eosin” a Scrabble word?
Yes
EOSIN
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Eosin
/ˈi.əsɪn/
noun
1.A red, acidic dye commonly used in histological stains.