Know how to use "fewer" and "less"? Find out.
occlusion oc·clu·sion (ə-klōō'zhən)
The act of occluding or the state of being occluded.
An obstruction or a closure of a body passage.
Any contact between the cutting or chewing surfaces of opposing teeth.
The alignment of the teeth of the upper and lower jaws when brought together.
The absorption of a gas or other substance, as by a metal.
The inclusion of one substance within another.