occlusion
/ə-ˈklü-zhən/
noun
the act of occluding : the state of being occluded: such as
the complete obstruction of the breath passage in the articulation of a speech sound
the bringing of the opposing surfaces of the teeth of the two jaws into contact; also : the relation between the surfaces when in contact
noun
the partial or complete blocking (as by a thrombus, by spasm, or by sclerosis) of a coronary artery