cirrus cloud
Noun
Meaning
a wispy white cloud (usually of fine ice crystals) at a high altitude (4 to 8 miles)
Source: WordNetSynonyms
Hypernyms
Hyponyms
Examples
Cirrus fibratus clouds Based upon data taken from the United States using these methods, cirrus cloud cover was found to vary diurnally and seasonally.
Balloon-carried hygrometers give information on the humidity of the cirrus cloud but are not accurate enough to measure the depth of the cloud.
In winter, the cirrus cloud cover did not vary appreciably from day to night.
The ice crystals in contrails are much smaller than those in naturally-occurring cirrus cloud, as they are around 0.001 millimeters to 0.1 millimeters in length.
These may contribute to cirrus cloud formation.
These percentages include clear days and nights, as well as days and nights with other cloud types, as lack of cirrus cloud cover.