Dictionary.com
definitions

malocclusion

[mal-uh-kloo-zhuh n]
noun Dentistry.
  1. faulty occlusion; irregular contact of opposing teeth in the upper and lower jaws.

Origin of malocclusion

First recorded in 1885–90; mal- + occlusion
Related formsmal·oc·clud·ed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for malocclusion

malocclusion

noun
  1. dentistry a defect in the normal position of the upper and lower teeth when the mouth is closed, as from abnormal development of the jaw
Derived Formsmaloccluded, adjective
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
Word Origin and History for malocclusion
n.

1864, from mal- + occlusion.

Online Etymology Dictionary, © 2010 Douglas Harper
malocclusion in Medicine

malocclusion

[măl′ə-klōō′zhən]
n.
  1. Faulty contact between the upper and lower teeth when the jaw is closed.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
malocclusion in Science

malocclusion

[măl′ə-klōō′zhən]
  1. Misalignment between the upper and lower teeth when the jaw is closed, resulting in a faulty bite.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.