English version

cirrus in Meteorology topic

From Longman Dictionary of Contemporary Englishcirruscir‧rus /ˈsɪrəs/ noun [uncountable]  HEMa form of cloud that is light and shaped like feathers, high in the sky
Examples from the Corpus
cirrusScientists say the average cirrus cloud cover over the United States has increased 5 percent since the 1960s.The sky is clear blue, with a few cirrus clouds adding texture to what looks like a flawless blue canvas.