• synonyms

extratropical cyclone

[ek-struh-trop-i-kuh l, ek-]
  1. any large-scale, cyclonic storm that is not a tropical cyclone, especially the common frontal cyclone of the middle and high latitudes.
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Origin of extratropical cyclone

First recorded in 1920–25; extra- + tropical
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

extratropical cyclone in Science

extratropical cyclone

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