/ Dictionary / Index D dome car: Meaning and Definition of Find definitions for: dome' car" Pronunciation: [key] a railroad passenger car having a dome in its roof. Cf. dome (def. 7). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dome domed Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language