[ uh-kloo-zhuh n ]
/ əˈklu ʒən /


the act or state of occluding or the state of being occluded.
Dentistry. the fitting together of the teeth of the lower jaw with the corresponding teeth of the upper jaw when the jaws are closed.
Pathology. closure or blockage of a blood vessel: coronary occlusion.
Phonetics. momentary complete closure at some area in the vocal tract, causing stoppage of the flow of air and accumulation of pressure.
  1. the formation of an occluded front.
  2. occluded front.

Origin of occlusion

1635–45; < Latin occlūs(us) (past participle of occlūdere to occlude) + -ion


oc·clu·sal [uh-kloo-suh l, -zuh l] /əˈklu səl, -zəl/, adjectivenon·oc·clu·sion, nounpre·oc·clu·sion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for occlusion

British Dictionary definitions for occlusion

/ (əˈkluːʒən) /


the act or process of occluding or the state of being occluded
meteorol another term for occluded front
dentistry the normal position of the teeth when the jaws are closed
phonetics the complete closure of the vocal tract at some point, as in the closure prior to the articulation of a plosive

Derived forms of occlusion

occlusal (əˈkluːsəl), 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

Medicine definitions for occlusion

[ ə-klōōzhən ]


The act of occluding or the state of being occluded.
An obstruction or closure of a body passage.
Any contact between the cutting or chewing surfaces of opposing teeth.
The alignment of the teeth of the upper and lower jaws when brought together.
The absorption of a gas or other substance, as by a metal.
The inclusion of one substance within another.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for occlusion

[ ə-klōōzhən ]

An obstruction in a passageway, especially of the body.
The alignment of the upper and lower sets of teeth with each other.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.