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-storm

suffix
 
 
/-stɔːm/ US  /-stɔːrm/

Definition

used to form words for particular types of violent weather: a rainstorm a sandstorm a snowstorm a thunderstorm a windstormStormy weatherWind and winds
(Definition of -storm suffix from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of -storm