Dictionary![]() ![]() Laur•a•siaPronunciation: (lô-rā'zhu, -shu), [key] —n. Geol. a hypothetical landmass in the Northern Hemisphere near the end of the Paleozoic Era: split apart to form North America and Eurasia. Cf. Gondwana. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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