/ Dictionary / Index D deacidify: Meaning and Definition of Find definitions for: de•a•cid•i•fy Pronunciation: (dē"u-sid'u-fī"), [key] — -fied, -fy•ing. to remove acid from (a substance). to reduce the acidity of (a substance). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. deacetylate deacon Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language