occlusion (
http://definr.com/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]