halogen : Dictionary / Wörterbuch (BEOLINGUS, TU Chemnitz)

English Dictionary: halogen	by the DICT Development Group
2 results for halogen
From WordNet (r) 3.0 (2006) [wn]:
halogen n any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Halogen \Hal"o*gen\, n. [Gr. "a`ls, "alo`s, salt + -gen: cf. F. halog[8a]ne.] (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}.