/ Dictionary / Index A ATC: Meaning and Definition of Find definitions for: ATC Pronunciation: [key] Air Traffic Control. Air Transport Command. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Atbara Atchison Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language