altocumulus definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
the type of white or gray cloud that resembles a sharply defined, wavy patch, found at intermediate altitudes and consisting of small water droplets
Origin: alto- plush cumulus
altocumulus definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A cloud formation of rounded, fleecy, white or gray masses.
Origin: Latin altus, high; see al-2 in Indo-European roots + cumulus.
altocumulus - Science Definition
A mid-altitude cloud composed of fleecy white or gray patches or bands. Altocumulus clouds generally form between 2,000 and 6,100 m (6,560 and 20,000 ft). See illustration at cloud.