An occlusion occurs when something has been closed up or blocked off. Almost all heart attacks are the result of the occlusion of a coronary (heart) artery by a blood clot.

OCCLUSION definition: the act of closing, blocking, or shutting something, or the state of being closed or blocked. See examples of occlusion used in a sentence.

OCCLUSION definition: 1. in medicine, something that blocks a tube or opening in the body, or when something is blocked…. Learn more.

Definition of occlusion noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Embolic occlusion was induced by transfer of acetic acid–induced embolus into the brain.

Dec 11, 2025 · (medicine) Anything that obstructs or closes a vessel or canal. (medicine, dentistry) The alignment of the teeth when upper and lower jaws are brought together. …

occlusion, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

Occlusion, in a dental context, means simply the contact between teeth. More technically, it is the relationship between the maxillary (upper) and mandibular (lower) teeth when they approach …

1. The complete closure of a vessel with gas, liquid or solid. 2. Obstruction. 3. Closure of the upper and lower molars. See Acute vascular occlusion, Aortic occlusion, Central retinal artery …

Occlusion is either the act of blocking something or a specific blockage. There can be occlusions blocking the street or your arteries. When dentists say occlusion, they’re talking about what …