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cirrostratus
[ sir-oh-strey-tuhs, -strat-uhs ]
noun
- a cloud of a class characterized by a composition of ice crystals and often by the production of halo phenomena and appearing as a whitish and usually somewhat fibrous veil, often covering the whole sky and sometimes so thin as to be hardly discernible: of high altitude, about 20,000–40,000 feet (6000–12,000 meters).
cirrostratus
/ ˌɪəʊˈٰɑːə /
noun
- a uniform layer of cloud above about 6000 metres (20 000 feet)
cirrostratus
/ î′ō-ٰă′ə /
, Plural cirrostrati î′ō-ٰă′ī′
- A thin, hazy, high-altitude cloud composed of ice crystals, often covering the sky in sheets and producing a halo effect around the sun. Cirrostratus clouds generally form between 6,100 and 12,200 m (20,000 and 40,000 ft).
- See illustration at cloud
Derived Forms
- ˌˈٰپ, adjective
Other 51Թ Forms
- r·ٰt adjective
51Թ History and Origins
Origin of cirrostratus1
Example Sentences
The clouds are call cirrus or cirrostratus and they form very high in the atmosphere at a similar height to the cruising altitude of regular aircraft.
Going through 70 years of books on the science of clouds, West explains why, depending on atmospheric conditions, contrails can either evaporate rapidly or persist and grow into sheets of cirrostratus.
Ms Donovan said the meteorological phenomenon usually forms high up in the sky among the cirrus and cirrostratus clouds.
Check out “The Cloudspotter’s Guide” from your local library, pack up a comfortable blanket to spread in a field and spend the afternoon identifying cirrostratus and cumulonimbus clouds.
As skies clear in the afternoon and the temperature hits 60 degrees, we may see higher clouds: wispy cirrus or cirrostratus, made of ice crystals 20,000 feet up.
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