Dye used in some ballpoint ink Crossword Clue
5 letters · New York Times · Friday, February 22, 2019 · 46-Down
Appeared in 1 New York Times Crossword: Friday, February 22, 2019.
Exact puzzle match · New York Times · February 22, 2019 · 46-Down · 5 letters
EOSIN0 of 5 letters revealed
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What does this clue mean?
a red fluorescent dye resulting from the action of bromine on fluorescein; used in cosmetics and as a biological stain for studying cell structures
noun
WordNet® (Princeton University)
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