emissions trading
noun[U]
ENVIRONMENT(alsoemission trading)ukustheactivityofbuyingandsellingemissionunitsandemissioncredits:
The EU isdemandingthatemissionstradingand other suchmechanismsaccountfor no more thanhalfa country'scuts.
emissions trading plan/programme/schemeTheEuropeanUnionproposedrulesthat wouldrequireairlinesservingdomesticroutestoenterinto anemissionstradingschemeby 2011.