/ Dictionary / Index I ITC: Meaning and Definition of Find definitions for: ITC Pronunciation: [key] investment tax credit. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Itasca itch Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language