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- Rhymes: -eɪʃən
- The act of perforating or the state of being perforated.
- Any opening in a solid object.
- (medicine) An abnormal opening in an organ, such as a rupture.
- A series of holes punched through something in order to assist in separating parts.
- (mathematics) That portion of a surface that remains after an open disk is removed from it.
perforation f (plural perforations)