impervious

UV light is one cause of this breakdown, but merino wool offers natural UV protection, so your garment is more impervious to sun damage and will remain in like-new condition a lot longer.

As more and more ground gets covered with “impervious surfaces” like asphalt roads and concrete roofs, rain has fewer and fewer ways to soak into the earth.

The minimum requirements at BSL-3 would be an N95 mask, eye protection, gloves, and a lab coat, but we actually wear impervious Tyvek suits, aprons, and booties and are double-gloved.

Urban centers are more prone to flooding than other areas because streets, parking lots, and buildings are impervious, meaning water can’t seep into the ground the way it would in a forest or grassland.