Dictionary

extratropical cyclone

noun ex·tra·trop·i·cal cyclone \ˌek-strə-ˌträ-pi-kəl-\

Definition of EXTRATROPICAL CYCLONE

:  a cyclone in the middle or high latitudes often containing a cold front that extends toward the equator for hundreds of miles
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First Known Use of EXTRATROPICAL CYCLONE

1923

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