- A substance that pollutes something, especially water or the atmosphere: chemical pollutants [as modifier]: pollutant gasesMore example sentences
- Pentachlorophenol (PCP) is a good example of a nasty environmental pollutant.
- The emphasis is not on taxing pollutants or simply outlawing pollutants.
- The finding could help determine the background levels of various water pollutants.
More definitions of pollutantDefinition of pollutant in:
- The US English dictionary