heptachlor
/ˈhɛptəˌklɔr/
noun
- A highly toxic chemical compound that was used as an insecticide, now banned in many countries because of its harmful effects on the environment and human health.
- Heptachlor can remain in soil for many years, causing long-term pollution.
- Environmental groups worked to ban heptachlor because of its risk to wildlife and people.
- Farmers once used heptachlor to protect crops from insects, but it was later found to be dangerous.