/ Dictionary / Index H Hasa: Meaning and Definition of Find definitions for: Ha•sa Pronunciation: (hä'su), [key] — n. a region in E Saudi Arabia, on the Persian Gulf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. has Hasan Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language