/ Dictionary / Index D dephosphorylation: Meaning and Definition of Find definitions for: de•phos•pho•ryl•a•tion Pronunciation: (dē-fos'fur-u-lā'shun), [key] — n. Biochem. the removal of a phosphate group from an organic compound, as in the changing of ATP to ADP. the resulting state or condition. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dephosphorylate depict Related Content Daily Word Quiz: ounterfeit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language