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Etymology edit

From thunder +‎ storm.

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Noun edit

thunderstorm (plural thunderstorms)

  1. A storm consisting of thunder and lightning produced by a cumulonimbus, usually accompanied with heavy rain, wind, and sometimes hail; and in rarer cases sleet, freezing rain, or snow.
    Synonyms: (abbreviation) t-storm, lightning storm, electrical storm
    • 1936 July, John Buchan, “Lost Gods”, in The Island of Sheep, London: Hodder and Stoughton, published July 1938, →OCLC, part I (Fosse), page 11:
      I have never believed, as some people do, in omens and forewarnings, for the dramatic things in my life have generally come upon me as suddenly as a tropical thunder-storm.

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