Definition of altostratus in English:

Share this entry


Pronunciation: /ˌaltəʊˈstrɑːtəs/


[mass noun]
Cloud forming a continuous uniform layer which resembles stratus but occurs at medium altitude (typically 2 to 7 km, 6,500 to 23,000 ft).
Example sentences
  • The grey layer looks like and should be an altostratus although the fronts look different in the tropical regions.
  • An altostratus cloud usually covers the whole sky and has a gray or blue-gray appearance.
  • Where enough light shows through cirrostratus clouds to create shadows, it does not with altostratus.


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

Words that rhyme with altostratus

cirrostratus, nimbostratus, stratus
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.