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The Collaborative International Dictionary

Occlude \Oc*clude"\, v. t. [L. occludere, occlusum; ob (see Ob-) + claudere to shut.]

  1. To shut up; to close.
    --Sir T. Browne.

  2. (Chem.) To take in and retain; to absorb; -- said especially with respect to gases; as, iron, platinum, and palladium occlude large volumes of hydrogen.

Douglas Harper's Etymology Dictionary

1590s, from Latin occludere (past participle occlusus) "shut up, close up," from ob "against, up" (see ob-) + claudere "to shut, close" (see close (v.)). Of teeth, 1888 (also see occlusion). Related: Occluded; occluding.


vb. To obstruct, cover, or otherwise block an opening.


v. block passage through; "obstruct the path" [syn: obstruct, obturate, impede, jam, block, close up] [ant: free]


Usage examples of "occlude".

Berncastle mentions a case of extraction of double cataract and double iridectomy for occluded pupils, which, after thirty years of blindness, resulted in the recovery of good sight.

Elaine on a jet crossing the country, sailing west like gods over isobars and occluded fronts and high-pressure systems, chasing the weather to its source.

In some instances among the lower classes these obturators are simple pieces of wood, so fashioned as to fit into the palatine cleft, and not infrequently the obturator has been swallowed, causing obstruction of the air-passages or occluding the esophagus.

The doors were barred, the windows occluded, but by staring through the cracks in the walls I managed to catch glimpses of hospital gurneys, surgical lights, and three enormous glass beakers in which sallow, teratoid fetuses drifted like pickles in brine.

Lusk mentions a case of pregnancy with fibrocystic tumor of the uterus occluding the cervix.

Leukocytes become more actively phagocytic, release lysosomal enzymes, turn sticky, and aggregate together in dense masses, occluding capillaries and shutting off the blood supply.

The gray walls of the courtyard were walls of shadow now, hardly to be seen at all except where their tops occluded the sky.

A dark shadow glided soundlessly through the under-growth, and she snapped her gaze up in time to see some-thing very large blot the fragments of sky not occluded by the distant canopy.

A pale promontory flashed in and out of view on the western horizon as a rainstorm occluded it at intervals.

A momentary occluding of the sunlight spilling into the front cavern, then they were gone.

On land, meridional, a bispherical moon, revealed in imperfect varying phases of lunation through the posterior interstice of the imperfectly occluded skirt of a carnose negligent perambulating female, a pillar of the cloud by day.

Maybe the Clems have occluded our perceptions so that we believe and see and experience but it is not real.

The precise cause of death had been a fragment of bone marrow that had somehow found its way into a cerebral artery, occluding it and causing a massive, fatal stroke.

I couldn't tell much about the coronary arteries except that they were not occluded.

When she pushed back, there was a dead spot on the mirror where her perspiration occluded the reflection.