halon
/ˈheɪlɑn/
noun
- A type of chemical compound used in fire extinguishers, especially in places with sensitive electronic equipment, now largely banned because it harms the ozone layer.
- Old fire extinguishers containing halon must be disposed of carefully.
- The building's fire suppression system used halon to protect the computer servers.
- Because halon damages the ozone layer, its production was stopped in most countries.