/ Dictionary / Index D double precision: Meaning and Definition of Find definitions for: dou'ble preci'sion Pronunciation: [key] — Computers. Computers. using twice the normal amount of storage, as two words rather than one, to represent a number. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. double possessive double predestination Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language