AskDefine | Define occlusion

Dictionary Definition



1 closure or blockage (as of a blood vessel)
2 (meteorology) a composite front when colder air surrounds a mass of warm air and forces it aloft [syn: occluded front]
3 (dentistry) the normal spatial relation of the teeth when the jaws are closed
4 an obstruction in a pipe or tube; "we had to call a plumber to clear out the blockage in the drainpipe" [syn: blockage, block, closure, stop, stoppage]
5 the act of blocking [syn: blockage, closure]

User Contributed Dictionary



  1. The process of occluding, or something that occludes.
  2. Anything that obstructs or closes a vessel or canal.
  3. In the context of "medicine|dentistry": The alignment of the teeth when upper and lower jaws are brought together.
  4. An occluded front.
  5. A closure within the vocal tract that produces an oral stop or nasal stop.
  6. The absorption of a gas or liquid by a substance such as a metal.
  7. The blocking of the view of part of an image by another.

Extensive Definition

Occlusion is a term indicating that the state of something, which is normally open, is now totally closed.
  • In dentistry, occlusion refers to the manner in which the teeth from upper and lower arches come together when the mouth is closed.
  • In psychology, specifically memory research, occlusion is the phenomenon of items associated to the same cue as the target blocking the successful retrieval of that target, through strength dependent response competition. The tip-of-the-tongue phenomenon is an example of occlusion.
  • In audiology, occlusion refers to the phenomenon that when persons with normal hearing close off the opening into the ear canal, the loudness of low pitched sounds (presented by bone conduction) increases.
  • In computer gaming audio engines, the term describes modification of the qualities of a sound that passes through or around an object so that the player experiences a greater sense of realism. For example, a sound that comes from behind a door realistically sounds as if it passed through a door.
occlusion in German: Okklusion
occlusion in French: Occlusion
occlusion in Dutch: Occlusie
occlusion in Russian: Окклюзия
occlusion in Ukrainian: Оклюзія

Synonyms, Antonyms and Related Words

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