/ Dictionary / Index U UIT: Meaning and Definition of Find definitions for: UIT Pronunciation: [key] unit investment trust. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Uisnech uitlander Related Content Daily Word Quiz: ablution Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language