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Laurentian

[law-ren-shuh n] /lɔˈrɛn ʃən/
adjective
1.
of or relating to the St. Lawrence River.
2.
Geology. noting or pertaining to the granite intrusions and orogeny in Canada around the Great Lakes during Archeozoic time.
Origin of Laurentian
1860-1865
1860-65; < Late Latin Laurenti(us) Lawrence (orig. adj., equivalent to Laurent(ēs) men of Laurentum + -ius -ious) + -an

Laurentian Mountains

plural noun
1.
a range of low mountains in E Canada, between the St. Lawrence River and Hudson Bay.
Also called Laurentians.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for Laurentian
Historical Examples
  • Below these beds but one series of beds is as yet known in the world, called the “Laurentian.”

    Town Geology Charles Kingsley
  • In this broad sense we may be said to be still living in the Laurentian epoch.

  • However, until this happens they may be conveniently classed as Laurentian.

  • From the Laurentian up to the recent rocks there has never been any real hiatus.

    The Gospel Of Evolution Edward Aveling
  • Many inquiries suggest themselves to the zoologist in connection with the life of the Laurentian period.

  • The white and gray Laurentian boulders lay along the roadside.

    Locusts and Wild Honey John Burroughs
  • It is from this model that Vasari executed the much-criticised staircase of the Laurentian.

    Michelangelo Romain Rolland
  • We have considered the Laurentian highland and the glaciation which centered there.

    The Red Man's Continent Ellsworth Huntington
  • Thus in the Laurentian Lakes above Ontario the geologist finds evidence that the drainage lines have again and again been changed.

    Outlines of the Earth's History Nathaniel Southgate Shaler
  • Let this suffice at present for the Cambrian and Laurentian rocks.

    Town Geology Charles Kingsley
British Dictionary definitions for Laurentian

Laurentian

/lɔːˈrɛnʃən/
adjective
1.
Also Lawrentian. of or resembling the style of D. H. Lawrence or T. E. Lawrence
2.
of, relating to, or situated near the St Lawrence River

Laurentian Mountains

plural noun
1.
a range of low mountains in E Canada, in Quebec between the St Lawrence River and Hudson Bay. Highest point: 1191 m (3905 ft) Also called Laurentides (ˈlɔːrənˌtaɪdz)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for Laurentian

in reference to granite strata in eastern Canada, 1863, named for the Laurentian Mountains, where it is found, which are named for the nearby St. Lawrence River. Hence, Laurasia, Paleozoic supercontinent comprising North America and Eurasia, 1931, from German (1928), from Laurentia, geologists' name for the ancient core of North America + (Eur)asia.

Online Etymology Dictionary, © 2010 Douglas Harper
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