/ Dictionary / Index D definitize: Meaning and Definition of Find definitions for: def•i•nit•ize Pronunciation: (def'u-ni-tīz", di-fin'i-), [key] — -ized, -iz•ing. to cause to become definite; crystallize. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. definitive plumage definitude Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language