/ Dictionary / Index U USITC: Meaning and Definition of Find definitions for: USITC Pronunciation: [key] United States International Trade Commission. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. USIS Usk Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language