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[thuhn-der-hed] /ˈθʌn dərˌhɛd/
noun, Meteorology
incus (def 2).
the upper portion of a cumulus cloud characterized by dense, sharply defined, cauliflowerlike upper parts and sometimes by great verticality.
Origin of thunderhead
1850-55, Americanism; thunder + head Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for thunderhead
Contemporary Examples
Historical Examples
  • She still felt the effects of her adventure with the thunderhead.

  • After a spell like this they say of every thunderhead that appears, "That looks promising."

    In Pastures Green Peter McArthur
  • If it wasnt so early in the summer Id say a thunderhead was fixin up to give us a big razoo, he ventured.

    Dust of the Desert Robert Welles Ritchie
British Dictionary definitions for thunderhead


(mainly US & Canadian) the anvil-shaped top of a cumulonimbus cloud
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
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Word Origin and History for thunderhead

"high-piled cloud," 1861, from thunder (n.) + head (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
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