ZERO-PROOF BOOKKEEPING Used in small businesses and by individuals. Method of bookkeeping with a zero balance at end of the accounting period.
ZERO COUPON YIELD CURVE A yield curve showing discounts for maturities from a starting point to present. This is done through stripping the yield curve.
ZERO DISCHARGE TECHNOLOGY Industrial processes that won’t release any toxic or harmful material into the environment.
ZIP CODE Code established by US Postal service to indicate each location. Has since been made 9 digits allowing more accurate identification of a location. Stands for Zoning Improvement Plan.