/ Dictionary / Index P phosphorylase: Meaning and Definition of Find definitions for: phos•pho•ryl•ase Pronunciation: (fos'fur-u-lās", -lāz", fos-fôr'u-, -for'-), [key] — n. Biochem. any enzyme, occurring widely in animal and plant tissue, that in the presence of an inorganic phosphate catalyzes the conversion of glycogen into sugar phosphate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. phosphorus trichloride phosphorylate Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language