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Related to Laurasia: Panthalassa
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.
[New Latin Laur(entia), geologic precursor of North America (after the Saint Lawrence River) + (Eur)asia.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
[C20: from New Latin Laur(entia) (referring to the ancient N American landmass, from Laurentian strata of the Canadian Shield) + (Eur)asia]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Laur•a•sia(lɔˈreɪ ʒə, -ʃə)
a hypothetical landmass in the Northern Hemisphere that separated near the end of the Paleozoic Era to form North America and Eurasia.
[< German (1928), b. Laurentia the forerunner of the North American continent (see Laurentian) and Eurasia]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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 formed at the end of the Precambrian Eon and broke up in the middle of the Mesozoic Era. Compare Gondwanaland.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||Laurasia - a hypothetical continent that (according to plate tectonic theory) broke up later into North America and Europe and Asia|
northern hemisphere - the hemisphere that is to the north of the equator
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