Absorbent ground

(Paint.) a ground prepared for a picture, chiefly with distemper, or water colors, by which the oil is absorbed, and a brilliancy is imparted to the colors.

See also: Absorbent

References in periodicals archive ?
This feature facilitates water-permeability of roads and public spaces, enabling it to absorb an estimated 4,000 liters of water per hour per square meter given suitably absorbent ground.
While public playgrounds (including school playgrounds) must adhere to strict playground regulations that dictate the height of monkey bars and the depth of absorbent ground covering, backyard playgrounds are much harder to regulate.
I wonder how much we have done ourselves to create the flooding problem by reducing the amount of absorbent ground, with such things as paved front gardens for extra parking, and improving drainage run-off generally.