/ Dictionary / Index Z zero-coupon: Meaning and Definition of Find definitions for: ze•ro-cou•pon Pronunciation: (zēr'ō-k'pon, -ky'-), [key] — adj. of or pertaining to a debt obligation that bears no interest but that is sold substantially below its face value. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. zero-base budgeting zero defects Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language