Altocumulus Definition

ăltō-kyo͝omyə-ləs
altocumuli
noun
A cloud formation of rounded, fleecy, white or gray masses.
American Heritage
The type of white or gray cloud that resembles a sharply defined, wavy patch, found at intermediate altitudes and consisting of small water droplets.
Webster's New World

(physics, meteorology) A principal medium-level cloud type, white and/or gray in color, which occurs as a layer or patch with a waved aspect, the elements of which appear as laminae, rounded masses, or rolls. These elements usually are sharply outlined, but they may become partly fibrous or diffuse; they may or may not be merged; they generally have shadowed parts; and, by convection, when observed at an angle of more than 30° above the horizon, subtend an angle between 1 degrees and 5 degrees. (Abbreviated Ac.)

Wiktionary
Synonyms:
  • altocumulus cloud
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other
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).
American Heritage Science
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Other Word Forms of Altocumulus

Noun

Singular:
altocumulus
Plural:
altocumuli

Origin of Altocumulus

  • Latin altus high al-2 in Indo-European roots cumulus

    From American Heritage Dictionary of the English Language, 5th Edition

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