Definition of Laurasia noun from the Oxford Advanced Learner's Dictionary

 

Laurasia

 noun
noun
BrE BrE//lɔːˈreɪʃə//
 
; NAmE NAmE//lɔːˈreɪʃə//
 
; BrE BrE//lɔːˈreɪʒə//
 
; NAmE NAmE//lɔːˈreɪʒə//
 
[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 American Dictionary entry: Laurasia