Definition
To pierce or punch a series of holes through a material. In aviation maintenance and manufacturing, perforating is used to create deliberate openings in metal sheets, panels, pipes, or oil well casings to allow the passage of fluids, gases, sound, or fasteners.
Plain English
To make holes through something on purpose -- usually a row or pattern of holes -- so that air, fuel, oil, or other fluids can pass through.
Context Anchor
Seen in aircraft inspection, repair, and maintenance descriptions when a surface or part has holes through it.
Derivation
From the Latin perforare, meaning 'to bore through' (per- 'through' + forare 'to bore'). The aviation use keeps that original sense exactly: holes bored straight through a material.
Why Pilots Care
A perforated part may be weakened or may allow air, fuel, oil, exhaust, or water to pass where it should not. Some holes are designed and approved; unwanted holes need inspection and proper repair.
Intuition Check
A dent, scratch, or surface mark is not the same as a perforation. To perforate means the hole goes through the material.
Example Sentence 1
The acoustic liner inside the engine nacelle is perforated with thousands of small holes to absorb noise.
Example Sentence 2
Mechanics perforate the trailing edge of the control surface to allow moisture to drain and prevent corrosion.