oc·clu·sion /əˈkluʒən/
  閉塞,吸收,吸藏
  oc·clu·sion /əˈkluʒən/ 名詞
  閉合,閉塞,阻塞,牙合,咬合,牙合(面),咬合(面)
  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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  occlusion
       n 1: closure or blockage (as of a blood vessel)
       2: (meteorology) a composite front when colder air surrounds a
          mass of warm air and forces it aloft [syn: occluded front]
       3: (dentistry) the normal spatial relation of the teeth when
          the jaws are closed
       4: an obstruction in a pipe or tube; "we had to call a plumber
          to clear out the blockage in the drainpipe" [syn: blockage,
           block, closure, stop, stoppage]
       5: the act of blocking [syn: blockage, closure]