halon
1. [ noun ] (chemistry) a compound in which the hydrogen atoms of a hydrocarbon have been replaced by bromine and other halogen atoms; very stable; used in fire extinguishers although it is thought to release bromine that depletes the ozone layer
Related terms: pollutant organic_compound
Similar spelling:   haulm
  Hallahan
  Hallum
  Hallam
  Halina
  Halenia