The property of something that cannot be pervaded by a liquid

Usage examples of impermeability.

From what we know of the impermeability of this sand to light, the upper illuminated part in these several cases must have determined the curvature of the lower buried portions.

From what we have seen of the impermeability of this sand to light, the curvature of the hypocotyls certainly extended down to a depth where no light could enter.

Nevertheless, as every determination of matter, which constitutes its reality, and hence the impermeability of matter also, is an effect (action) which must have a cause, and therefore be itself derived, matter is not adequate to the idea of a necessary Being, as a principle of all derived unity, because every one of its real qualities is derived and, therefore, conditionally necessary only, so that it could be removed, and with it would be removed the whole existence of matter.

I may, first, by an analytical process, realise the concept of body, through the predicates of extension, impermeability, form, etc.

There is something about having an established family, a long-lasting spousal arrangement, three daughters in their teens, a house in the country, a suggestion of impermeability, that draws the curiosity of others so that they can, as Tom says, probe with probity.

His usual shell of mental impermeability was faltering, as if attacked from the inside by some overwhelming emotion.

Thus the concept of body, whenever we perceive something outside us, necessitates the representation of extension, and, with it, those of impermeability, shape, etc.