cirrocumulus

[sir-oh-kyoo-myuh-luh s] /ˌsɪr oʊˈkyu myə ləs/
noun, plural cirrocumulus.
1.
a cirriform cloud of a class characterized by thin, white patches, each of which is composed of very small granules or ripples: of high altitude, about 20,000–40,000 feet (6000–12,000 meters).
Origin
1795-1805; cirro- + cumulus
Related forms
cirrocumular, cirrocumulative
[sir-oh-kyoo-myuh-ley-tiv, -luh-tiv] /ˌsɪr oʊˈkyu myəˌleɪ tɪv, -lə tɪv/ (Show IPA), cirrocumulous, adjective
British Dictionary definitions for cirrocumulus

cirrocumulus

/ˌsɪrəʊˈkjuːmjʊləs/
noun (pl) -li (-ˌlaɪ)
1.
(meteorol) a high cloud of ice crystals grouped into small separate globular masses, usually occurring above 6000 metres (20 000 feet) See also mackerel sky
Word Origin and History for cirrocumulus
n.

1803, from cirrus + cumulus.

cirrocumulus in Science
cirrocumulus
  (sîr'ō-kym'yə-ləs)   
Plural cirrocumuli (sîr'ō-kym'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.