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extra-tropical
extra-tropical adj.
Brit. 
/ˌɛkstrəˈtrɒpᵻkl/
, /ˌɛkstrəˈtrɒpᵻkl/U.S. /ˌɛkstrəˈtrɑpək(ə)l/
existing, situated, or taking place outside the tropics./ˌɛkstrəˈtrɑpək(ə)l/ΚΠ
1783 Blagden in Philos. Trans. (Royal Soc.) 73 368 The cold..abated 20 or 30 degrees..no greater alteration than frequently takes place in most extratropical climates.
1830 J. Lindley Introd. Nat. Syst. Bot. 232 Verbascum is wholly extratropical.
1863 J. D. Dana Man. Geol. 615 The cold extratropical currents that flow towards the equator.
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