Definitions for "fluorescein"
A yellowish red, crystalline substance, C20H12O5, produced by heating together phthalic anhydride and resorcin; -- so called, from the very brilliant yellowish green fluorescence of its alkaline solutions. It has acid properties, and its salts of the alkalies are known to the trade under the name of uranin.
An organic chemical, which fluoresces green in water, detectable even when present in minute quantities. Used in tracing underground water flow.
Dye that fluoresces green when exposed to blue or ultraviolet light.
Keywords:  staining, see
See fluorescent staining.