Both the "locked-in" and the "mill-applied" treatments make carpets relatively impervious to spotting from food, beverages or pet accidents.

The telescope girders and prefabricated framework, which were made in Spain, are relatively impervious to shock.

Obama has often looked two or three moves ahead, relatively impervious to the permanent hysteria of the hourly news cycle and the cable-news shouters.

First on the head, which was relatively impervious, then stomping a foot, which wasn't.

The undertaking will be relatively impervious to such debacles as Black Monday for the simple reason that, says Simon, "we don't own any stock."

The asphalt-saturated base is relatively impervious to rain and snow, but without the mineral coating it would quickly break down when exposed to the sun.

If there is ice, even in a relatively impervious planet, why has it not sublimed in the vacuum of space?

Engineers have traditionally used polished granite surface plates to establish a plane of reference, since they are relatively impervious and inflexible.

Ms. Heaviside thinks she knows why the image has proved relatively impervious.

Historically, the American personal computer industry has been relatively impervious to Japanese competition.