extratropical cyclone

[ ek-struh-trop-i-kuh l, ek- ]
/ ˈɛk strəˈtrɒp ɪ kəl, ˌɛk- /


any large-scale, cyclonic storm that is not a tropical cyclone, especially the common frontal cyclone of the middle and high latitudes.

Origin of extratropical cyclone

First recorded in 1920–25; extra- + tropical
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Science definitions for extratropical cyclone

extratropical cyclone
[ ĕk′strə-trŏpĭ-kəl ]

See under cyclone.
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