/ Dictionary / Index A Adrian I: Meaning and Definition of Find definitions for: Adrian I Pronunciation: [key] died a.d. 795, pope 772–795. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Adrian Adrian II Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language