perforation
noun
- 1
The act of perforating or the state of being perforated.
- 2
Any opening in a solid object.
- 3
An abnormal opening in an organ, such as a rupture.
- 4
A series of holes punched through something in order to assist in separating parts.
- 5
That portion of a surface that remains after an open disk is removed from it.
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