zero-coupon bond ze·ro·cou·ponbond uncommon noun 1. the commonest form of zero-coupon security Synonymszero-coupon bond 2. a bond that is issued at a deep discount from its value at maturity and pays no interest during the life of the bond; the commonest form of zero-coupon security Synonymszero coupon bond Related words Broader terms bondzero-coupon security WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.