noun

1. a closing or being closed
2. a finish; end; conclusion
3. the feeling that one's prolonged state of emotional distress over some traumatic experience or situation has finally ended
4. anything that closes or shuts
5. cloture
6. Geol. the vertical distance between the highest point of an anticlinal structure and the lowest contour that encircles it
7. Math. the property of a set in which an operation on pairs of its elements always produces an element of the set
8. Phonet. a blocking of the air stream at some point in the oral cavity

Etymology: OFr < L clausura, a closing < pp. of claudere, to close

transitive verb closured -·sured, closuring -·sur·ing