You searched for: “halogens
halogen (s) (noun), halogens (pl)
One of the five electronegative diatomic elements, which are fluorine, chlorine, iodine, bromine, or astatine: These components are used to describe lamps or other light sources containing a filament heated by a halogen because the components readily form salts when combined with most metals, including sodium.
This entry is located in the following unit: halio-, hali-, halo-, hal- (page 2)