[sir-oh-kyoo-myuh-luh
s] 
| 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, ab. 20,000–40,000 ft. (6000–12,000 m). |
| 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. |