/ Dictionary / Index P protodeacon: Meaning and Definition of Find definitions for: pro•to•dea•con Pronunciation: (prō"tō-dē'kun), [key] — n. a chief deacon in the Greek Church. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. protocontinent protoderm Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language