/ Dictionary / Index D deltaic: Meaning and Definition of Find definitions for: del•ta•ic Pronunciation: (del-tā'ik), [key] — adj. pertaining to or like a delta. forming or having a delta. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. delta hepatitis delta iron Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language