Laurentian Definition

Of or relating to the St. Lawrence River.
Webster's New World
Of or relating to the Precambrian gneissic granite of the Lake Superior area.
American Heritage
Designating or of a series of rocks of the Precambrian system in E Canada.
Webster's New World

Origin of Laurentian

  • From Latin Laurentius Lawrence

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

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