• synonyms


or thun·der·clouds

See more synonyms for thundercloud on Thesaurus.com
  1. cumulonimbus.
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Origin of thundercloud

First recorded in 1690–1700; thunder + cloud
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


Examples from the Web for thundercloud

Contemporary Examples

Historical Examples

  • Then the truth fell on him like a thundercloud, and he hurried back to the house for good.

    The Christian

    Hall Caine

  • "Then there is no thundercloud in heaven for me now," she said.

    The Manxman

    Hall Caine

  • This comes on us like a thundercloud, and you seem not to realise it.

    The Manxman

    Hall Caine

  • Richling looked up at him as a child looks at a thundercloud.

    Dr. Sevier

    George W. Cable

  • He saw the thundercloud arise that was to darken the horizon.

British Dictionary definitions for thundercloud


  1. a towering electrically charged cumulonimbus cloud associated with thunderstorms
  2. anything that is threatening
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

thundercloud in Science


  1. See cumulonimbus.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.