Definition of altocumulus in English:

altocumulus

Syllabification: al·to·cu·mu·lus
Pronunciation: /ˌaltōˈkyo͞omyələs
 
/

noun (plural altocumuli /-ˌlī/)

Cloud forming a layer of rounded masses with a level base, occurring at medium altitude, usually 6,500–23,000 feet (2-7 km).
More example sentences
  • No altocumulus cloud anywhere in Earth's real atmosphere would be caught dead above 20,000 feet.
  • By the time we had a task and were ready to rock the wind had backed off to only 10 km/h, and with the sun being blocked from wide spread altocumulus clouds conditions suddenly were barely soarable.
  • It is caused by light shining through thin altocumulus, which causes the light to bend as it passes through the water droplets within the cloud.

Origin

late 19th century: from modern Latin alto- (from Latin altus 'high') + cumulus.

Definition of altocumulus in:

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Pronunciation: dəˈmôrəˌlīz
verb
cause (someone) to lose confidence or hope; dispirit