mid atlantic ridge

Mid-Atlantic Ridge

[mid-at-lan-tik, mid-at-lan-]
noun
a north-south suboceanic ridge in the Atlantic Ocean from Iceland to Antarctica on whose crest are several groups of islands; shown by plate tectonics to be the axis along which North America has split away from Eurasia, and along which South America has split away from Africa.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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WordNet
mid-atlantic ridge

noun
a very long narrow elevation on the ocean floor that runs all the way from Iceland in the North Atlantic to Bouvet Island in the South Atlantic 
WordNet® 3.0, © 2006 by Princeton University.
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