/ Dictionary / Index P phycoerythrin: Meaning and Definition of Find definitions for: phy•co•e•ryth•rin Pronunciation: (fī"kō-i-rith'rin, -er'u-thrin), [key] — n. a red protein pigment occurring in red algae. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: phycoerythrin (Thesaurus) phycocyanin phycology Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language