[ uh-klood ]
/ əˈklud /

verb (used with object), oc·clud·ed, oc·clud·ing.

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), oc·clud·ed, oc·clud·ing.

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.

Origin of occlude

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


oc·clud·ent, adjectiveun·oc·clud·ed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for occlude

British Dictionary definitions for occlude

/ (əˈkluːd) /


(tr) to block or stop up (a passage or opening); obstruct
(tr) to prevent the passage of
(tr) chem (of a solid) to incorporate (a substance) by absorption or adsorption
meteorol to form or cause to form an occluded front
dentistry to produce or cause to produce occlusion, as in chewing

Derived forms of occlude

occludent, adjective

Word Origin for occlude

C16: from Latin occlūdere, from ob- (intensive) + claudere to close
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

Medical definitions for occlude

[ ə-klōōd ]


To cause to become closed; obstruct.
To prevent the passage of.
To bring together the upper and lower teeth in proper alignment for chewing.
To enclose a virus, as in an inclusion body.
In chemistry, to absorb and retain gases and other substances.

Other words from occlude

oc•cludent adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for occlude

[ ə-klōōd ]

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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.