/ Dictionary / Index P phosphorylate: Meaning and Definition of Find definitions for: phos•pho•ryl•ate Pronunciation: (fos'fur-u-lāt", fos-fôr'u-, -for'-), [key] — -at•ed, -at•ing. to introduce the phosphoryl group into (an organic compound). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. phosphorylase phosphoryl group 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