Laurasia[lô rā′z̸hə, -s̸hə]
Laurasia definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
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
Origin: Laur(entian) plush (Eur)asia
Laurasia definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The protocontinent of the Northern Hemisphere, a hypothetical landmass that according to the theory of plate tectonics broke up into North America, Europe, and Asia.
Origin: New Latin Laur(entia), geologic precursor of North America (after the Saint Lawrence River) + (Eur)asia.
laurasia - Science Definition
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. Compare Gondwanaland.