altostratus Hear it!

altostratus definition

alto·stra·tus (al′tō strāt′əs, -strat′-)

noun

the type of gray or bluish cloud found at intermediate altitudes and consisting of a thick, dense, extensive layer of ice crystals and water droplets: may cause light precipitation

Etymology: alto- + stratus

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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