/ Dictionary / Index P protocontinent: Meaning and Definition of Find definitions for: pro•to•con•ti•nent Pronunciation: (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. protocol protodeacon Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language