Laurasia definition

lô-rāzhə
The supercontinent of the Northern Hemisphere that, according to the theory of plate tectonics, broke up into North America, Greenland, Europe, and Asia except for the Indian subcontinent.
noun
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(place) The Mesozoic landmass in the Northern Hemisphere that included what are now North America and Eurasia: it and Gondwana were the result of the splitting of Pangea.
proper name
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A supercontinent of the Northern Hemisphere made up of the landmasses that currently correspond to North America, Greenland, Europe, and Asia (except India). According to the theory of plate tectonics, Laurasia separated from Pangaea at the end of the Paleozoic Era and broke up into the current continents in the middle of the Mesozoic Era.
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Origin of laurasia

  • New Latin Laur(entia) geologic precursor of North America (after the Saint Lawrence River) (Eur)asia

    From American Heritage Dictionary of the English Language, 5th Edition