thundercloud

or thun·der·clouds

[ thuhn-der-kloud ]
/ ˈθʌn dərˌklaʊd /

noun

Origin of thundercloud

First recorded in 1690–1700; thunder + cloud
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for thundercloud

British Dictionary definitions for thundercloud

thundercloud

/ (ˈθʌndəˌklaʊd) /

noun

a towering electrically charged cumulonimbus cloud associated with thunderstorms
anything that is threatening
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

Science definitions for thundercloud

thundercloud

[ thŭndər-kloud′ ]

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