This powdery material is spread on the ground where slugs are found.

The longer the distance the wind covers - its fetch, as scientists call it - the more sandy or powdery material it can pick up.

It is a dull-gray powdery material with no common uses, other than a few specialized semiconductor applications.

In his experimentation he concocted a powdery material with a consistency between that of sugar and flour.

Very little powdery material is blown out of the kiln.

Physically, fly ash is a very fine, powdery material, composed mostly of silica nearly all particles are spherical in shape.

The powdery materials, researchers say, could eventually help pharmaceutical manufacturers sharply cut the cost of producing antibiotics and other types of drugs.

Heaped in the middle of it was a cone of dry grayish-white powdery material.

The molecular sieve is a powdery ceramic material able to separate molecules based on their size.

This material tends to flake and the powdery material builds up rapidly on the floor.