Thundercloud
or thunderclouds
[thuhn-der-kloud] /ˈθʌn dərˌklaʊd/
noun
1.
cumulonimbus.
thundercloud
/ˈθʌndəˌklaʊd/
noun
1.
a towering electrically charged cumulonimbus cloud associated with thunderstorms
2.
anything that is threatening
thundercloud
(thŭn’dər-kloud’)
See cumulonimbus.
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