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Definitions of occlusion
  1. noun
    (meteorology) a composite front when colder air surrounds a mass of warm air and forces it aloft

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  2. noun
    an obstruction in a pipe or tube
  3. noun
    the act of blocking

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  4. noun
    closure or blockage (as of a blood vessel)
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  5. noun
    (dentistry) the normal spatial relation of the teeth when the jaws are closed
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