noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A principal medium-level cloud type in the form of a gray or bluish (never white) sheet or layer of striated, fibrous, or uniform appearance.
2. 2
   a stratus cloud at an intermediate altitude of 2 or 3 miles wordnet

Synonyms

All synonyms

altostratus cloudasas

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.