Powder Dust

Powder

A powder is a dry solid composed of many very fine particles that may flow freely when shaken or tilted. Powders are a special sub-class of granular materials, although the terms powder and granular are sometimes used to distinguish separate classes of material. In particular, powders refer to those granular materials that have the finer grain sizes, and that therefore have a greater tendency to form clumps when flowing. Granulars refer to the coarser granular materials that do not tend to form clumps except when wet.

Dust

Dust is made of fine particles of solid matter. On Earth, it generally consists of particles in the atmosphere that come from various sources such as soil lifted by wind, volcanic eruptions, and pollution.

powder

Noun

1. The fine particles which are the result of reducing a dry substance by pounding, grinding, or triturating, or the result of decay; dust.

Verb

1. To reduce to fine particles; to pound, grind, or rub into a powder.
2. To sprinkle with powder, or as if with powder.

dust

Noun

1. Fine particles.

Verb

1. To remove dust from.
2. To remove dust; to clean by removing dust.