/ Dictionary / Index L light displacement: Meaning and Definition of Find definitions for: light' displace'ment Pronunciation: [key] — Naut. Naut. the weight of a ship with all its permanent equipment, excluding the weight of cargo, persons, ballast, dunnage, and fuel, but usually including the weight of permanent ballast and water used to operate steam machinery. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. light curve light draft Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language