Of or relating to a situation in which a gain is offset by an equal loss: ". . .under the zero-sum budgeting system that governs federal spending, the money for spinal research is likely to be deducted from some other research account” ( Daniel S. Greenburg).
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.