Akademik

perforation
noun
1. a line of small holes for tearing at a particular place (Freq. 1)
Derivationally related forms: ↑perforate
Hypernyms: ↑hole
2. a hole made in something
-

a perforation of the eardrum

Derivationally related forms: ↑perforate
Hypernyms: ↑hole
3. the act of punching a hole (especially a row of holes as for ease of separation)
Derivationally related forms: ↑perforate
Hypernyms: ↑puncture

Useful english dictionary. 2012.