/ Dictionary / Index D delta connection: Meaning and Definition of Find definitions for: del'ta connec"tion Pronunciation: [key] — Elect. Elect. the series connection of three elements in a three-phase circuit forming a triangle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Delta Aquarids delta function 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