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emission credit UK US (also emissions credit) noun [C, usually plural] (also pollution credit, also US emission reduction credit) ENVIRONMENT
► a reduction in pollution that is equal to one emission unit. A company that reduces its pollution can sell its emission credits to companies that fail to reduce their pollution: »
If a company fails to meet its emission-reduction target, it will need to buy additional emission credits to cover its excess emissions.
Financial and business terms. 2012.