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fluorescein

fluorescein definition

fluo·res·cein (-res′ē in)

noun

a yellowish-red, crystalline compound, CHO, made synthetically from resorcinol and phthalic anhydride: a dilute alkaline solution appears green by reflected light and red by transmitted light: used as a textile dye, a liquid coloring, and, in medicine, an intravenous diagnostic aid

Etymology: < fluoresce + -in: from its bright fluorescence in solution

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