Alto-stratus

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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]



From WordNet (r) 2.0 [wn]:

  altostratus
       n : a stratus cloud at an intermediate altitude of 2 or 3 miles
           [syn: {altostratus cloud}]
       [also: {altostrati} (pl)]