어떤 물질을 불순하게 하거나 오염시키는 해로운 물질.
A substance that makes something impure, unclean, or unfit for use by introduction or contact.
예문:
"The laboratory analysis revealed high levels of chemical contaminants in the groundwater."
"Filters are used to remove airborne contaminants from the cleanroom environment."
"The food was recalled after a biological contaminant was discovered during a routine inspection."