Category:Halogen

Hal"o*gen, n. Etym: [Gr. "a`ls, "alo`s, salt + -gen: cf. F. halogène.] (Chem.)

Defn: An electro-negative element or radical, which, by combination with a metal, forms a haloid salt; especially, chlorine, bromine, and iodine; sometimes, also, fluorine and cyanogen. See Chlorine family, under Chlorine.