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[L. occlusio, a closing up]
1. The acquired or congenital closure, or state of being closed, of a passage.
SYN: SEE: imperforation
2. Alignment of the mandibular and maxillary teeth when the jaw is closed or in functional contact.
SYN: SEE: dental occlusion
3. The covering of an eye in order to improve vision in the other, e.g., in treating strabismus.