[ awr-thuh-don-tiks ]
/ ˌɔr θəˈdɒn tɪks /

noun (used with a singular verb)

the branch of dentistry dealing with the prevention and correction of irregular teeth, as by means of braces.

Origin of orthodontics

First recorded in 1905–10; orth- + -odont + -ics

Related forms

or·tho·don·tic, or·tho·don·tal, adjectiveor·tho·don·tist, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for orthodontist

  • In theory, a married born-again Christian orthodontist who lives in Costa Rica.

    Who's the Happiest?|Anneli Rufus|August 16, 2010|DAILY BEAST
  • "Lefty is going to take me to the orthodontist this afternoon," she said.

    The Right Time|Walter Bupp

British Dictionary definitions for orthodontist


orthodontia (ˌɔːθəʊˈdɒntɪə)

/ (ˌɔːθəʊˈdɒntɪks) /


(functioning as singular) the branch of dentistry concerned with preventing or correcting irregularities of the teethAlso called: dental orthopaedics

Derived Forms

orthodontic, adjectiveorthodontist, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for orthodontist (1 of 2)


[ ôr′thə-dŏntĭst ]


A person who specializes in orthodontics.

Medicine definitions for orthodontist (2 of 2)


[ ôr′thə-dŏntĭks ]


The dental specialty and practice of preventing and correcting irregularities of the teeth, as by the use of braces.orthodontia orthodonture

Related forms

or′tho•dontic adj.or′tho•dontist n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.