/ Dictionary / Index D devitalize: Meaning and Definition of Find definitions for: de•vi•tal•ize Pronunciation: (dē-vīt'l-īz"), [key] — -ized, -iz•ing. to deprive of vitality or vital properties; make lifeless; weaken. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: devitalize (Thesaurus) devisor devitrify Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language