/ Dictionary / Index D displacement tonnage: Meaning and Definition of Find definitions for: displace'ment ton"nage Pronunciation: [key] — Naut. Naut. the number of long tons of water displaced by a vessel, light or load displacement being specified. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. displacement ton displacer Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language