1. Also ze·ro-based. without reference to a base figure or to previous practice; according to present needs only, as opposed to a percentage increase or decrease of previous figures: zero-base planning; zero-base inventory.
verb (used with object), ze·ro-based, ze·ro-bas·ing.
  1. to apply zero-base methods to.

Origin of zero-base

First recorded in 1965–70 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018