altostratus

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noun al·to·stra·tus \ˌal-tō-ˈstrā-təs, -ˈstra-\

Definition of altostratus

plural

altostrati

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  1. :  a fairly uniform mid-altitude layer of gray cloud darker than cirrostratus — see cloud illustration

Origin and Etymology of altostratus

New Latin, from Latin altus + New Latin -o- + stratus


First Known Use: 1890


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WORD OF THE DAY

to decrease in size, extent, or degree

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