1. 
   Extratropical
   Ex`tra·trop'ic·al adjective Beyond or outside of the tropics. Whewell.
   Found op http://www.encyclo.co.uk/webster/E/97
   
   
2. 
   Extratropical
   • (a.) Beyond or outside of the tropics.
   Found op http://thinkexist.com/dictionary/meaning/extratropical/
   
   
3. 
   Extratropical
   In meteorology, the area north of the Tropic of Cancer and the area south of the Tropic of Capricorn. In other words, the area outside the tropics.
   Found op http://www.cpc.noaa.gov/products/outreach/glossary.shtml
   
   

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