cir·ro·cu·mu·lus  (sîr'ō-kyōōm'yə-ləs)  n. A high-altitude cloud composed of a series of small, regularly arranged cloudlets in the form of ripples or grains. |
cirrocumulus (sîr'ō-ky m'yə-ləs) Pronunciation Key
Plural cirrocumuli (sîr'ō-ky m'yə-lī')
A high-altitude cloud composed of a series of small, regularly arranged cloudlets in the form of ripples or grains. Cirrocumulus clouds generally form between 6,100 and 12,200 m (20,000 and 40,000 ft) and are composed exclusively of ice crystals. See illustration at cloud. |