Definition of "ETS"

ETS

noun
countable and uncountable, plural ETSes
1. (economics) Initialism of emissions trading scheme.
  Quotations
  Free pollution permits worth €98.5bn were given to energy-intensive sectors […] . This is more than the €88.5bn that the EU’s emissions trading scheme (ETS) charged polluters, mostly coal and gas power stations, for their CO2 emissions. […] Carbon emissions covered by the ETS have fallen by 37% since it began in 2005, largely thanks to the growth of renewable energy.
  2022 November 29, Damian Carrington, “Big polluters given almost €100bn in free carbon permits by EU”, in The Guardian‎
2. (medicine) Initialism of environmental tobacco smoke.
  Quotations
  The evidence clearly showed that ETS increased the risk of SIDS, but the panel couldn’t decide whether that risk was caused by prenatal smoking, postnatal ETS, or both.
  2010, Naomi Oreskes, Erik M. Conway, chapter 5, in Merchants of Doubt
3. (military, US) Initialism of end of term of service or expiration of term of service.
4. (military, US) Initialism of estimated time of separation.
proper noun
1. Initialism of Educational Testing Service: the world's largest private nonprofit educational testing and assessment organization, founded in 1947.