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superstorm

[soo-per-stawrm]
noun
  1. a very severe and widespread storm characterized by record-setting meteorological events and large-scale destruction: The superstorm brought a 15-foot storm surge to the harbor.
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Origin of superstorm

1955–60; super (adj.) + storm
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for superstorm

superstorm

noun
  1. an extremely powerful storm that causes widespread devastation
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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