When a cloud forms in space, it is known as an interstellar cloud, or a nebula. Three components are necessary for clouds to form: water vapor, cool or cold air, and condensation nuclei. A white cloud means that the cloud was formed with warm air. A grey, or a black cloud, means that the cloud contains larger drops of water. There are four main types of clouds:
a wispy white cloud (usually of fine ice crystals) at a high altitude (4 to 8 miles)
A photograph showing a view of clouds, such as those surrounding a planet.
Find another word for cirrus. In this page you can discover 14 synonyms, antonyms, idiomatic expressions, and related words for cirrus, like: cloud, cirrus-cloud, cirrhus, alto-cumulus, alto-stratus, cloudscape, cumulo-nimbus, fibrilla, mammatocumulus, strato-cumulus and threadlet.