bn:00003157n
Noun Concept
Categories: Cloud types, Stratus
EN
altostratus  altostratus cloud  Alto stratus  altostratus clouds  As
EN
A stratus cloud at an intermediate altitude of 2 or 3 miles WordNet 3.0
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EN
A stratus cloud at an intermediate altitude of 2 or 3 miles WordNet 3.0 & Open English WordNet
Altostratus is a middle-altitude cloud genus made up of water droplets, ice crystals, or a mixture of the two. Wikipedia
A principal medium-level cloud type in the form of a gray or bluish (never white) sheet or layer of striated, fibrous, or uniform appearance. Wiktionary
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