Dictionary![]() ![]() pro•to•con•ti•nentPronunciation: (prō"tō-kon'tn-unt), [key] —n. Geol. an actual or hypothetical landmass that might later be enlarged into a major continent or broken up into smaller ones. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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