occlusion

1. The process of occluding, or something that occludes. (countable, uncountable)
2. Anything that obstructs or closes a vessel or canal. (countable, uncountable)
3. The alignment of the teeth when upper and lower jaws are brought together. (countable, uncountable)
4. An occluded front. (countable, uncountable)
5. A closure within the vocal tract that produces an oral stop or nasal stop. (countable, uncountable)
6. The absorption of a gas or liquid by a substance such as a metal. (countable, uncountable)
7. The blocking of the view of part of an image by another. (countable, uncountable)

Plural occlusions