fumigant
/ˈfjuːmɪɡənt/
noun
- A chemical substance used in the form of vapor or gas to kill pests, insects, or germs.
- The exterminator used a fumigant to eliminate termites from the house.
- The warehouse was sealed off while the fumigant did its work.
- Farmers sometimes apply a fumigant to the soil before planting crops.
Synonyms