/ Dictionary / Index O OHC: Meaning and Definition of Find definitions for: OHC Pronunciation: [key] — Auto. Auto. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. O'Hare O. Henry Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language