perforation
Small punched opening
Perforation is a hole or series of holes punched through a surface, typically to allow easy separation or passage.
The perforated line on a sheet of stamps lets you tear them apart cleanly.
Perforated paper, leather, or metal allows air or liquid through: perforated eardrum, perforated ulcer.
The verb is perforate.
Erosive tissue wound
- appendicitisInflamed vestigial gut pouch
- ruptureViolent tearing apart
- bowelInternal digestive organ
- eardrumInner auditory membrane
septum · peptic · surgical · peritonitis · gastric · intestinal · tympanic · trauma
Section designed for removal
- couponCertificate for reduced price
- ticketEntry permit slip
- stubRetained portion after detachment
- receiptWritten payment acknowledgment
check · notebook · binder · spiral-bound · detachable · scorecard · raffle · voucher
Study of postal stamps
- postageFee for mailing
- collectingGathering items over time
- albumUnified collection of recordings
- cancellationVoiding of plans
commemorative · definitive · roulette · margin · coil · booklet · sheet · gauge
Permits air passage
- airflowMovement of atmosphere
- membraneThin tissue sheet
- fabricWoven or knit material
- meshInterlocking open weave
screen · louver · grille · vent · porous · permeable · drainage · aeration
Shaped by blade press
- precisionAccuracy of measurement
- machineryCollective mechanical equipment
- pressApply force downward
- stampingForceful foot motion
manufacturing · template · pattern · tensile · specification · calibration · tolerance · gauge
hole
Absence in matter
pierce · prick · needle · bore · drill · awl · spike · trocar · lancet · pinhole
ulcer
Erosive tissue wound
- appendicitisInflamed vestigial gut pouch
- ruptureViolent tearing apart
- bowelInternal digestive organ
eardrum · septum · peptic · surgical · peritonitis · gastric · intestinal · tympanic · trauma · complication
tear-off
Section designed for removal
receipt · check · notebook · binder · spiral-bound · detachable · scorecard · raffle · voucher · form
philately
Study of postal stamps
- postageFee for mailing
- collectingGathering items over time
- albumUnified collection of recordings
cancellation · commemorative · definitive · roulette · margin · coil · booklet · sheet · gauge · separation
breathable
Permits air passage
mesh · screen · louver · grille · vent · porous · permeable · drainage · aeration · circulation
die-cut
Shaped by blade press
stamping · manufacturing · template · pattern · tensile · specification · calibration · tolerance · gauge · tooling
perforationsolid surface
Tangible, unyielding plane
wholeness · intactness · continuity · solidity · impermeability