from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The process of occluding.
  • n. Something that occludes.
  • n. Medicine An obstruction or a closure of a passageway or vessel.
  • n. Dentistry The alignment of the teeth of the upper and lower jaws when brought together.
  • n. Meteorology The process of occluding air masses.
  • n. Meteorology An occluded front.
  • n. Linguistics Closure at some point in the vocal tract that blocks the flow of air in the production of an oral or nasal stop.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The process of occluding, or something that occludes.
  • n. Anything that obstructs or closes a vessel or canal.
  • n. The alignment of the teeth when upper and lower jaws are brought together.
  • n. An occluded front.
  • n. A closure within the vocal tract that produces an oral stop or nasal stop.
  • n. The absorption of a gas or liquid by a substance such as a metal.
  • n. The blocking of the view of part of an image by another.

from the GNU version of the Collaborative International Dictionary of English

  • n. The act of occluding, or the state of being occluded.
  • n. The transient approximation of the edges of a natural opening; imperforation.

from The Century Dictionary and Cyclopedia

  • n. A shutting up; a closing; specifically, in pathology, the total or partial closure of a vessel, cavity, or hollow organ; imperforation.
  • n. In physics and chem., the act of occluding, or absorbing and concealing; the state of being occluded. See occlude.
  • n. In dentistry, the fitting into each other of the cusps of the opposing teeth in the upper and lower jaws.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. closure or blockage (as of a blood vessel)
  • n. (dentistry) the normal spatial relation of the teeth when the jaws are closed
  • n. the act of blocking
  • n. an obstruction in a pipe or tube
  • n. (meteorology) a composite front when colder air surrounds a mass of warm air and forces it aloft


from The American Heritage® Dictionary of the English Language, 4th Edition

From Latin occlūsus, past participle of occlūdere, to occlude; see occlude.



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  • Eeew!

    February 24, 2008

  • "...when he learnt that the grape in question was only one of the nine that made up the charge of the launch's four-pounder, he at once had him seized up by the heels, ran for the stomach-pump and forced a large quantity of tepid salt water tinged with rum into his body, reflecting with pleasure, as among the agonized retching he heard the clang of the ball in the basin, that he had cured his patient not only of probably mortal occlusion but of any taste for spiritous liquors for some time to come."

    --Patrick O'Brian, The Far Side of the World, 278

    February 23, 2008