[al-toh-kyoo-myuh-luh
s] 
| a cloud of a class characterized by globular masses or rolls in layers or patches, the individual elements being larger and darker than those of cirrocumulus and smaller than those of stratocumulus: of medium altitude, about 8000–20,000 ft. (2450–6100 m). |
| al·to·cu·mu·lus (āl'tō-kyōō'myə-ləs) n. A cloud formation of rounded, fleecy, white or gray masses. [Latin altus, high; see al-2 in Indo-European roots + cumulus.] |
altocumulus (āl'tō-ky 'myə-ləs) Pronunciation Key
Plural altocumuli (āl'tō-ky m'yə-lī')
A mid-altitude cloud composed of fleecy white or gray patches or bands. Altocumulus clouds generally form between 2,000 and 6,100 m (6,560 and 20,000 ft). See illustration at cloud. |