Found 2 items, similar to altostratus.
English → English (WordNet) Definition: altostratus altostratus n : a stratus cloud at an intermediate altitude of 2 or 3 miles [syn: altostratus cloud] [also: altostrati (pl)]
English → English (gcide) Definition: altostratus altostratus \altostratus\, Alto-stratus \Al`to-stra"tus\, n. [L. altus high + L. & E. stratus.] (Meteor.) A cloud formation similar to cirro-stratus, but heavier and at a lower level; a stratus cloud at an intermediate altitude of 2 or 3 miles. [Webster 1913 Suppl. + WordNet 1.5]