/ Dictionary / Index D Diu: Meaning and Definition of Find definitions for: Di•u Pronunciation: (dē'), [key] — n. part of the union territory of Goa, Daman, and Diu, in W India: a former Portuguese colony, comprising a small island and seaport at the extremity of Kathiawar peninsula. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ditzy diuresis Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language