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The Collaborative International Dictionary
Phycoerythrine

Phycoerythrin \Phy`co*e*ryth"rin\, Phycoerythrine \Phy`co*e*ryth"rine\, n. [Gr. ? seaweed + E. erythrin, -ine.] A red coloring matter found in alg[ae] of the subclass Floride[ae].

Wiktionary
phycoerythrine

n. (alternative form of phycoerythrin English)