zero-sum

[ zeer-oh-suhm ]
/ ˈzɪər oʊˌsʌm /
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adjective

of or denoting a system in which the sum of the gains equals the sum of the losses: a zero-sum economy.

Origin of zero-sum

First recorded in 1955–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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