n. A specialty of dentistry concerned with correcting misalignment of teeth.
the GNU version of the Collaborative International Dictionary of English
n. A branch of dentistry specializing in the treatment of the teeth so as to make the teeth align properly within the mouth; it usually involves fitting a patient with braces and sometimes oral surgery.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the branch of dentistry dealing with the prevention or correction of irregularities of the teeth
Word Usage
"University and Baylor College of Dentistry and earned his M.S.D. in orthodontics from Northwestern University in Chicago."