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Dust is made of fine particles of solid matter. [1] On Earth, it generally consists of particles in the atmosphere that come from various sources such as soil lifted by wind (an aeolian process), volcanic eruptions, and pollution. Dust in homes is composed of about 20–50% dead skin cells. [2]
The meaning of DUST is fine particles of matter (as of earth). How to use dust in a sentence.
Jul 16, 2024 · Dust, in general, is any microscopic, powderlike particle or collection of powderlike particles that is made up of sand, soil, fragments of organic tissue, or other materials and is both light enough to be carried by the wind and heavy enough to be deposited on a surface.
Sep 26, 2021 · Some dust is natural, coming from rocks, soils and even space. But the DustSafe program is revealing Australian house dust can include nasties such as: trace metals. radioactive elements
Oct 19, 2023 · Dust is a collection of microscopic particles of material. Dust is heavy enough to see and light enough to be carried by the wind. Dust can be made up of pollen, bacteria, smoke, ash, salt crystals from the ocean, and small bits of dirt or rock, including sand.
noun. dry fine powdery material, such as particles of dirt, earth or pollen. a cloud of such fine particles. the powdery particles to which something is thought to be reduced by death, decay, or disintegration. the mortal body of man. the corpse of a dead person. the earth; ground.
dust. noun [ U ] uk / dʌst / us / dʌst /. Add to word list. B1. dry dirt in the form of powder that covers surfaces inside a building, or very small dry pieces of soil, sand, or other substances: The furniture was covered in dust and cobwebs. A cloud of dust rose in the air as the car roared past.