occlusion

nouns

closure or blockage (as of a blood vessel)
is a type of (narrower)
a sudden occurrence of an uncontrollable condition
"an attack of diarrhea"
(meteorology) a composite front when colder air surrounds a mass of warm air and forces it aloft
(dentistry) the normal spatial relation of the teeth when the jaws are closed
domain category
the branch of medicine dealing with the anatomy and development and diseases of the teeth
is a type of (narrower)
the spatial property of a place where or way in which something is situated
"the position of the hands on the clock"; "he specified the spatial relations of every piece of furniture on the stage"
an obstruction in a pipe or tube
"we had to call a plumber to clear out the blockage in the drainpipe"
the act of blocking
is derived from