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English definition of “occlusion”

occlusion

noun [C or U] (BLOCK)    /əˈkluː.ʒən/ specialized
medical in medicine , something that blocks a tube or opening in the body , or when something is blocked or closed Digestive disorders
(Definition of occlusion noun (BLOCK) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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