/ Dictionary / Index O orthodontics: Meaning and Definition of Find definitions for: or•tho•don•tics Pronunciation: (ôr"thu-don'tiks), [key] — n. (used with a sing. v.) the branch of dentistry dealing with the prevention and correction of irregular teeth, as by means of braces. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: orthodontics (Thesaurus) orthodontia orthodonture Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language