cirrostratusPronunciation: /ˌsɪrəʊˈstrɑːtəs, -ˈstreɪtəs/Definition of cirrostratus noun [mass noun] cloud forming a thin, more or less uniform semi-translucent layer at high altitude (usually 5 to 13 km, 16,500 to 45,000 ft). cirrostratus in other Oxford dictionaries Definition of cirrostratus in the US English dictionary
