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Fluorescein is a 11 letter word which starts with the letter F and ends with the letter N for which we found 1 definitions.

(n.) 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.
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