/ Dictionary / Index D delta wing: Meaning and Definition of Find definitions for: del'ta wing' Pronunciation: [key] a triangularly shaped surface that serves as both wing and horizontal stabilizer of a space vehicle and some supersonic aircraft. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. delta wave deltiology Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language