/ Dictionary / Index H Hadrian: Meaning and Definition of Find definitions for: Ha•dri•an Pronunciation: (hā'drē-un), [key] — n. a.d. 76–138, Roman emperor 117–138. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hadrian (Thesaurus) hadn't Hadrian I Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language