pulverulent

Made of, covered with, or crumbling to fine powder or dust.

Dusty; crumbly.

Dusty; consisting of fine powder; powdery: as, calcareous stone is sometimes found in the pulverulent form.

In zoology, finely powdery or dusty, as a surface; especially, covered as if powdered with very minute scales, as an insect.

In botany: Covered as if with powder or dust; pulveraceous: said of surfaces.

Of very slight cohesion: said of tissues.

Addicted to lying and rolling in the dust, as fowls.

Consisting of, or reducible to, fine powder; covered with dust or powder; powdery; dusty.

Consisting of, covered with, or disintegrating into a fine powder; powdery; dusty.