/ Dictionary / Index I internuncio: Meaning and Definition of Find definitions for: in•ter•nun•ci•o Pronunciation: (in"tur-nun'shē-ō", -sē-ō"), [key] — pl. -ci•os. a papal ambassador ranking next below a nuncio. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: internuncio (Thesaurus) internuncial interoceanic Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language