perforation

As wind hits the airfoils, it creates a low pressure zone that sucks air through perforations and turns a propeller at the bottom of the unit.

For extra measure, Maloja added a grid of ventilating perforations over the spine.

If it’s administered through a colonoscopy, there’s a risk of perforation of the colon, as there is with any colonoscopy.

Thanks to tiny perforations in the polyester build that boost air flow, sweat disappears immediately.

Razer’s Arctech cases employ a proprietary material called Thermaphene that draws heat out from the back of the device and vents it through small perforations in the back of the case.

He had several books containing large forms divided by perforation into four parts.

I took a sheet of paper to him, and showed him how easy it would be by perforation to tear off the stamps as needed.

When preserved whole, with merely a perforation at the top, they are used to carry water, some holding nearly three gallons.

Originally determined by the slat of wood which strengthened the wall-plate at the point of its perforation by the trunnels.

The ordinary dagger would have made a wider perforation with a corresponding increase in the blood-flow.