Halon

Halon can refer to:Haloalkane, or halogenoalkane, a group of chemical compounds consisting of alkanes with linked halogensVarious gaseous fire suppression agents:Halon 1211 (bromochlorodifluoromethane, CF2ClBr)Halon 1301 (bromotrifluoromethane, CBrF3)
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Noun
1. a compound in which the hydrogen atoms of a hydrocarbon have been replaced by bromine and other halogen atoms; very stable; used in fire extinguishers although it is thought to release bromine that depletes the ozone layer
(hypernym) organic compound

n. halo, nimbus, circle of light surrounding the head of a saint or divine being; circle of light around an object caused by the refraction of light

Bromine-containing compounds with long atmospheric lifetimes whose breakdown in the stratosphere causes depletion of ozone. Halons are used in firefighting.

Angel of the 3rd hour of the night, serving under Sarquamich.