pollutant
English Thesaurus
1. waste matter that contaminates the water or air or soil (noun.substance)
| hyponym | : | cfc, chlorofluorocarbon, |
| definition | : | a fluorocarbon with chlorine; formerly used as a refrigerant and as a propellant in aerosol cans (noun.substance) |
| hyponym | : | halon, |
| definition | : | a compound in which the hydrogen atoms of a hydrocarbon have been replaced by bromine and other halogen atoms; very stable; used in fire extinguishers although it is thought to release bromine that depletes the ozone layer (noun.substance) |
| hyponym | : | nitrogen oxide, |
| definition | : | any of several oxides of nitrogen formed by the action of nitric acid on oxidizable materials; present in car exhausts (noun.substance) |
| hyponym | : | sulfur dioxide, sulphur dioxide, |
| definition | : | a colorless toxic gas (SO2) that occurs in the gases from volcanoes; used in many manufacturing processes and present in industrial emissions; causes acid rain (noun.substance) |
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