Search results
- Dictionarydust/dʌst/
noun
- 1. fine, dry powder consisting of tiny particles of earth or waste matter lying on the ground or on surfaces or carried in the air: "the car sent up clouds of dust" Similar
- 2. an act of dusting: "a quick dust, to get rid of the cobwebs"
verb
- 1. remove the dust or dirt from the surface of (something) by wiping or brushing it: "I broke the vase I had been dusting" Similar
- 2. cover lightly with a powdered substance: "roll out on a surface dusted with icing sugar" Similar
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Jun 20, 2024 · PM stands for particulate matter (also called particle pollution): the term for a mixture of solid particles and liquid droplets found in the air. Some particles, such as dust, dirt, soot, or smoke, are large or dark enough to be seen with the naked eye. Others are so small they can only be detected using an electron microscope.
Jun 13, 2024 · Respirable dust, as defined by the World Health Organization (WHO), are particles measuring 10 micrometers or less in size that can be inhaled into the nose or mouth.
2 days ago · Phencyclidine or phenylcyclohexyl piperidine (PCP), also known in its use as a street drug as angel dust among other names, is a dissociative anesthetic mainly used recreationally for its significant mind-altering effects.
Jun 19, 2024 · Dust Bowl, name for both the drought period in the Great Plains that lasted from 1930 to 1936 and the section of the Great Plains of the United States that extended over southeastern Colorado, southwestern Kansas, the panhandles of Texas and Oklahoma, and northeastern New Mexico. Dust Bowl: dust storm.
Jun 25, 2024 · Airborne suspensions of extremely small solid or liquid particles called “particulates” (e.g., soot, dust, smokes, fumes, mists), especially those less than 10 micrometres (μm; millionths of a metre) in size, are significant air pollutants because of their very harmful effects on human health.
Jun 20, 2024 · The air we breathe indoors and outdoors always contains particle pollution. Some particles, such as dust, dirt, soot, or smoke, are large enough to be seen with the naked eye. Others are so small they can only be detected using an electron microscope (Figure 1).
Jun 13, 2024 · The Short Answer: A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems, all held together by gravity. We live on a planet called Earth that is part of our solar system. But where is our solar system? It’s a small part of the Milky Way Galaxy.
Jun 13, 2024 · A nebula is a giant cloud of dust and gas in space. Some nebulae (more than one nebula) come from the gas and dust thrown out by the explosion of a dying star, such as a supernova. Other nebulae are regions where new stars are beginning to form.
3 days ago · This is The English We Speak from the BBC and we're finding out about the phrase 'let the dust settle', which means to 'wait for a situation to calm down'. We can also say 'wait for...
Jun 7, 2024 · Dust mites are very small, insect-like pests that feed on dead human skin cells and thrive in warm, humid settings. Dust mites are too small for us to see. They are not parasites that bite, sting or burrow into our bodies.
