[proh-toh-kon-tn-uh nt]

Origin of protocontinent

First recorded in 1955–60; proto- + continent Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

protocontinent in Science


  1. 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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.