/ Dictionary / Index B backwardation: Meaning and Definition of Find definitions for: back•ward•a•tion Pronunciation: (bak"wur-dā'shun), [key] — n. (on the London stock exchange) the fee paid by a seller of securities to the buyer for the privilege of deferring delivery of purchased securities. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. backward backwash Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language