1. altostratus

noun. a stratus cloud at an intermediate altitude of 2 or 3 miles.


  • stratus cloud
  • altostratus cloud

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Sentences with altostratus

1. Noun, singular or mass
Such cold-front cumuli often pile up right along the frontal boundary on comparatively short notice, whereas the cirrus, cirrostratus, altostratus, stratus and nimbostratus of a warm front often are clouds that cover a large area.

2. Adjective
Mid-level clouds are designated with a prefix of “alto-” and include altocumulus and altostratus clouds.