Science Dictionary
cumulonimbus   (kym'yə-lō-nĭm'bəs)  Pronunciation Key 
Plural cumulonimbi (kym'yə-lō-nĭm'bī)
An extremely dense, vertically developed cloud with a low, dark base and fluffy masses that tower to great heights. Cumulonimbus clouds usually produce heavy rains, thunderstorms, or hailstorms. Also called thundercloud. See illustration at cloud.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Previous Definition: cumulonimbi
Next Definition: cumulus
Words Near: cumulonimbuses
More from
Synonyms and Antonyms for cumulonimbuses
More from
Search for articles containing cumulonimbuses
More from Translator Word FAQs presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.

Copyright © 2014, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature