/ Dictionary / Index R reserve buoyancy: Meaning and Definition of Find definitions for: reserve' buoy'ancy Pronunciation: [key] — Naut. Naut. the difference between the volume of a hull below the designed waterline and the volume of the hull below the lowest opening incapable of being made watertight. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. reserve bank reserve capacity Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language