n.
a line of small holes for tearing at a particular place
a hole made in something
"a perforation of the eardrum"
the act of punching a hole (especially a row of holes as for ease of separation)
ERCP-related perforations: risk factors and management
Colonoscopic perforations: a review of 30,366 patients.
Colonoscopic perforations: incidence, management, and outcomes
Repair of Root Perforations Using Mineral Trioxide Aggregate: A Long-term Study
Cerebral aneurysm perforations complicating therapy with Guglielmi detachable coils: A meta-analysis
Use of mineral trioxide aggregate for repair of furcal perforations
Amniotic membrane grafts for nontraumatic corneal perforations, descemetoceles, and deep ulcers.
Sealing ability of a mineral trioxide aggregate for repair of lateral root perforations.
The resurfacing of adult rabbit articular cartilage by multiple perforations through the subchondral bone
Use of anti-inflammatory drugs by patients admitted with small or large bowel perforations and haemorrhage.
