Hal"o*gen (hăl"&osl;*j&ebreve;n),
n. [Gr. "a`ls, "alo`s, salt + -gen: cf. F. halogène.]
(Chem.) 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.
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