| / English Dictionary |
OCCLUSION
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
The act of blocking
Synonyms:
Classified under:
Nouns denoting acts or actions
Hypernyms ("occlusion" is a kind of...):
obstruction (the act of obstructing)
Hyponyms (each of the following is a kind of "occlusion"):
implosion (the initial occluded phase of a stop consonant)
Derivation:
occlude (block passage through)
Sense 2
Meaning:
An obstruction in a pipe or tube
Example:
we had to call a plumber to clear out the blockage in the drainpipe
Synonyms:
block; blockage; closure; occlusion; stop; stoppage
Classified under:
Nouns denoting man-made objects
Hypernyms ("occlusion" is a kind of...):
impediment; impedimenta; obstructer; obstruction; obstructor (any structure that makes progress difficult)
Hyponyms (each of the following is a kind of "occlusion"):
breech closer; breechblock (a metal block in breech-loading firearms that is withdrawn to insert a cartridge and replaced to close the breech before firing)
plug; stopper; stopple (blockage consisting of an object designed to fill a hole tightly)
vapor lock; vapour lock (a stoppage in a pipeline caused by gas bubbles (especially a stoppage that develops in hot weather in an internal-combustion engine when fuel in the gas line boils and forms bubbles that block the flow of gasoline to the carburetor))
Sense 3
Meaning:
(dentistry) the normal spatial relation of the teeth when the jaws are closed
Classified under:
Nouns denoting attributes of people and objects
Hypernyms ("occlusion" is a kind of...):
position; spatial relation (the spatial property of a place where or way in which something is situated)
Domain category:
dental medicine; dentistry; odontology (the branch of medicine dealing with the anatomy and development and diseases of the teeth)
Sense 4
Meaning:
(meteorology) a composite front when colder air surrounds a mass of warm air and forces it aloft
Synonyms:
occluded front; occlusion
Classified under:
Nouns denoting natural phenomena
Hypernyms ("occlusion" is a kind of...):
front ((meteorology) the atmospheric phenomenon created at the boundary between two different air masses)
Domain category:
meteorology (the earth science dealing with phenomena of the atmosphere (especially weather))
Sense 5
Meaning:
Closure or blockage (as of a blood vessel)
Classified under:
Nouns denoting stable states of affairs
Hypernyms ("occlusion" is a kind of...):
attack (a sudden occurrence of an uncontrollable condition)
Hyponyms (each of the following is a kind of "occlusion"):
laryngospasm (a closure of the larynx that blocks the passage of air to the lungs)
embolism (occlusion of a blood vessel by an embolus (a loose clot or air bubble or other particle))
thromboembolism (occlusion of a blood vessel by an embolus that has broken away from a thrombus)
thrombosis (the formation or presence of a thrombus (a clot of coagulated blood attached at the site of its formation) in a blood vessel)
coronary occlusion (occlusion of a coronary artery caused either by progressive atherosclerosis or by a blood clot)
Context examples:
A small (one mm or less) vesicular, papular or pustular monomorphous rash, which is associated with heat, fever or occlusion of sweat glands.
(Miliaria, NCI Thesaurus)
This leads to an inhibition of thrombotic occlusion and prevention of bacterial colonization that could occur upon clot formation.
(minocycline-EDTA, NCI Thesaurus)
When used in transcatheter arterial chemoembolization (TACE) procedures, infusion leads to lodging of the microspheres in the precapillary vessels and, consequently, to the occlusion of the hepatic artery.
(Amilomer, NCI Thesaurus)
It is caused by thrombotic occlusion of the abdominal aorta just above the level of the bifurcation.
(Leriche Syndrome, NCI Thesaurus)
In more severe situations, ischemia can lead to myocardial or cerebral infarction and retinal vessel occlusion.
(Hypoxia-Inducible Factor Pathway, NCI Thesaurus/BIOCARTA)
Build-up of fatty material and calcium deposition in the arterial wall resulting in partial or complete occlusion of the arterial lumen.
(Atherosclerosis, NCI Thesaurus)
Prognosis is dismal in cases where a complete occlusion occurs with rapid deterioration of neurological function.
(Basilar Artery Syndrome, NCI Thesaurus)
Any of a group of disorders leading to occlusion of the arteries arising from the aortic arch. Such occlusion may be caused by atherosclerosis, arterial embolism, syphilitic or tuberculous arteritis, etc.
(Aortic Arch Syndrome, NLM, Medical Subject Headings)
An abnormal occlusion where some of the mandibular teeth are buccal to the maxillary teeth.
(Crossbite, NCI Thesaurus)
Tubular (10-20 mm length) or eccentric or moderate tortuosity of proximal segment or moderately angulated segment, 45-90 degrees or irregular contour or moderate to heavy calcification or ostial in location or bifurcation lesions requiring double guidewires or some thrombus present or total occlusion less than 3 months old.
(American College of Cardiology/American Heart Association Lesion Complexity Score B, NCI Thesaurus/ACC)
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