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Definition of Laurasia noun from the Oxford Advanced American Dictionary

 

Laurasia

 noun
noun
NAmE//lɔˈreɪʒə//
 
[singular] (geology)
 
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a very large area of land that existed in the northern hemisphere millions of years ago. It was made up of the present N. America, Greenland, Europe, and most of Asia.
See the Oxford Advanced Learner's Dictionary entry: Laurasia