or·tho·don·tics

[awr-thuh-don-tiks]
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:
1905–10; orth- + -odont + -ics

or·tho·don·tic, or·tho·don·tal, adjective
or·tho·don·tist, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To orthodontic
Collins
World English Dictionary
orthodontics or orthodontia (ˌɔːθəʊˈdɒntɪks, ˌɔːθəʊˈdɒntɪə) [Click for IPA pronunciation guide]
 
n
(functioning as singular) Also called: dental orthopaedics the branch of dentistry concerned with preventing or correcting irregularities of the teeth
 
orthodontia or orthodontia
 
n
 
ortho'dontic or orthodontia
 
adj
 
ortho'dontist or orthodontia
 
n

00:10
Orthodontic is always a great word to know.
So is zedonk. Does it mean:
the offspring of a zebra and a donkey.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
orthodontics or orthodontia (ˌɔːθəʊˈdɒntɪks, ˌɔːθəʊˈdɒntɪə) [Click for IPA pronunciation guide]
 
n
(functioning as singular) Also called: dental orthopaedics the branch of dentistry concerned with preventing or correcting irregularities of the teeth
 
orthodontia or orthodontia
 
n
 
ortho'dontic or orthodontia
 
adj
 
ortho'dontist or orthodontia
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

orthodontics
1909, from Mod.L. orthodontia (1849), from ortho- (q.v.) + odon (gen. odontos) "tooth." Orthodontist is attested from 1903.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

orthodontics or·tho·don·tics (ôr'thə-dŏn'tĭks) or or·tho·don·ture (ôr'thə-dŏn'chər)
n.
The dental specialty and practice of preventing and correcting irregularities of the teeth, as by the use of braces. Also called orthodontia.


or'tho·don'tic adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
If orthodontic diagnosis has not been accomplished, recommendations should be
  made as necessary.
Snorkel mouthpieces feature an orthodontic design, with a snorkel splash guard
  and wide-bore breathing tube.
The recurring gesture of a hand reaching up to the mouth evokes not emotional
  desperation but severe orthodontic panic.
Orthodontic treatment has become a widely accepted procedure in dentistry.
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