verb (used with object), occluded, occluding.
to close, shut, or stop up (a passage, opening, etc.).
to shut in, out, or off.
Physical Chemistry. (of certain metals and other solids) to incorporate (gases and other foreign substances), as by absorption or adsorption.
verb (used without object), occluded, occluding.
Dentistry. to shut or close, with the cusps of the opposing teeth of the upper and lower jaws fitting together.
Meteorology. to form an occluded front.

1590–1600; < Latin occlūdere to shut up, close up, equivalent to oc- oc- + -clūdere, combining form of claudere to close

occludent, adjective
unoccluded, adjective

1. obstruct, clog, block, plug.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
occlude (əˈkluːd)
1.  (tr) to block or stop up (a passage or opening); obstruct
2.  (tr) to prevent the passage of
3.  (tr) chem (of a solid) to incorporate (a substance) by absorption or adsorption
4.  meteorol to form or cause to form an occluded front
5.  dentistry to produce or cause to produce occlusion, as in chewing
[C16: from Latin occlūdere, from ob- (intensive) + claudere to close]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

1590s, from L. occludere (pp. occlusus) "shut up, close up," from ob "against, up" + claudere "to shut, close" (see close (v.)). Of teeth, 1880 (implied in occlusion).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

occlude oc·clude (ə-klōōd')
v. oc·clud·ed, oc·clud·ing, oc·cludes

  1. To cause to become closed; obstruct.

  2. To prevent the passage of.

  3. To bring together the upper and lower teeth in proper alignment for chewing.

  4. To enclose a virus, as in an inclusion body.

  5. In chemistry, to absorb and retain gases and other substances.

oc·clud'ent adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
occlude   (ə-kld')  Pronunciation Key 
To force air upward from the Earth's surface, as when a cold front overtakes and undercuts a warm front.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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