Laurentia

noun
Lau·​ren·​tia | \ lȯ-ˈren(t)-sh(ē-)ə How to pronounce Laurentia (audio) \

Definition of Laurentia

geology
: a land mass that was an independent continent about 500 million years ago and that currently includes Greenland and a large part of the North American continent He explained that east of the Hudson River, the geology can get fairly mixed up. Many of the rocks there were produced by a huge collision of tectonic plates about 450 million years ago, called the tectonic orogeny, that sent an arc of islands crashing into the eastern coast of North America or, more correctly, Laurentia.— James Gorman, New York Times, 16 Nov. 2001 The large blue area in the figure is roughly coincident with Laurentia, the predecessor of the present North American continent.— Suzan van der Lee, Science, 9 Nov. 2001

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

First Known Use of Laurentia

1903, in the meaning defined above

Keep scrolling for more

Learn More About Laurentia

Time Traveler for Laurentia

Time Traveler

The first known use of Laurentia was in 1903

See more words from the same year

Dictionary Entries Near Laurentia

Laurent's acid

Laurentia

Laurentian

See More Nearby Entries 

Statistics for Laurentia

Cite this Entry

“Laurentia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Laurentia. Accessed 25 Sep. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Dog Words Quiz

  • shiba puppy more or less demanding cuddles
  • Which of the following animals has a dog in its etymology?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
 AlphaBear 2

Spell words. Make bears.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!