DICT.TW Dictionary Taiwan

 Oc·clu·sion n.
 1. The act of occluding, or the state of being occluded.
    Constriction and occlusion of the orifice.   --Howell.
 2. Med. The transient approximation of the edges of a natural opening; imperforation.
 Occlusion of gases Chem. & Physics, the phenomenon of absorbing gases, as exhibited by platinum, palladium, iron, or charcoal; thus, palladium absorbs, or occludes, nearly a thousand times its own volume of hydrogen, and in this case a chemical compound seems to be formed.
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