/ Dictionary / Index D departmentalize: Meaning and Definition of Find definitions for: de•part•men•tal•ize Pronunciation: (di-pärt-men'tl-īz", dē"pärt-), [key] — -ized, -iz•ing. to divide into departments. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. departmentalism departmental store Related Content Daily Word Quiz: jaundice Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language