trade wind - Dictionary definition and pronunciation - Yahoo! Education

Definition of trade wind


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trade wind  audio  (wnd) KEY 

NOUN:
Any of a consistent system of prevailing winds occupying most of the tropics, constituting the major component of the general circulation of the atmosphere, and blowing northeasterly in the Northern Hemisphere and southeasterly in the Southern Hemisphere. Often used in the plural.

ETYMOLOGY:
From obsolete to blow trade, to blow in a regular course, from trade, regular course (obsolete)


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