/ Dictionary / Index U U/D: Meaning and Definition of Find definitions for: U/D Pronunciation: [key] under deed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. U.C.V. UDAG Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language