protocontinent

protocontinent

[proh-toh-kon-tn-uhnt]
noun Geology.
an actual or hypothetical landmass that might later be enlarged into a major continent or broken up into smaller ones.

Origin:
1955–60; proto- + continent

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Science Dictionary
protocontinent   (prō'tō-kŏn'tə-nənt)  Pronunciation Key 
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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