In a nuclear reactor, a substance, as boron, that readily absorbs thermal neutrons from a chain reaction, thereby decreasing the reactivity of a reactor core: it is used for safety or control
One that contaminates.
A contaminating or being contaminated
The quality or condition of being impure, especially:
Removal of dirt.
A substance that adulterates
Find another word for pollutant. In this page you can discover 8 synonyms, antonyms, idiomatic expressions, and related words for pollutant, like: poison, contaminant, adulterator, contamination, contaminator, impurity, clean and adulterant.