A cumulonimbus is a thunderstorm that is composed of a high amount of cumulus clouds. These clouds are usually very large, and they can be seen from a long way away.

  • The cumulonimbus was so big that it was visible from the airport.

  • The cumulonimbus is a sign that a storm is coming.

Definition of cumulonimbus


a dark cloud of great vertical extent charged with electricity; associated with thunderstorms


cumulonimbus cloud, thundercloud

Nearby Words

cumulonimbus Pronunciation in a video

Example Sentences for cumulonimbus

  • 1

    A cumulonimbus incus is a sub form of cumulonimbus capillatus.

  • 2

    Or just a little cumulonimbus...

  • 3

    This is a powerful cumulonimbus cloud.

  • 4

    All are related to cumulonimbus clouds.

  • 5

    The cumulonimbus cloud is a weather symbol.

  • 6

    The cumulonimbus is the cloud responsible for thunderstorms.

  • 7

    The Cumulonimbus cloud is the basic foundation of a thundercloud.

  • 8

    Often formed from the anvil of cumulonimbus storms.

  • 9

    Or one great big one for clouds turning into a Cumulonimbus.