/ Dictionary / Index S salt dome: Meaning and Definition of Find definitions for: salt' dome" Pronunciation: [key] — Geol. Geol. a domelike rock structure that is formed beneath the earth's surface by the upward movement of a mass of salt, may reach thousands of feet in vertical extent, and is more or less circular in plan: often associated with oil and gas pools. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. salt chuck salted Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language