extratropical cyclone

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

noun

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

Scientific definitions for extratropical cyclone

extratropical cyclone
[ ĕk′strə-trŏpĭ-kəl ]

See under cyclone.