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protocontinent

[proh-toh-kon-tn-uh nt] /ˌproʊ toʊˈkɒn tn ənt/
noun, Geology
1.
an actual or hypothetical landmass that might later be enlarged into a major continent or broken up into smaller ones.
Origin
1955-1960
1955-60; proto- + continent
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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protocontinent in Science
protocontinent
  (prō'tō-kŏn'tə-nənt)   
A landmass that existed at some point in the past. Protocontinents that are thought to have comprised some or all of the present-day continents in a single landmass are also known as supercontinents.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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