'Halogen' definitions:

Definition of 'halogen'

(from WordNet)
noun
Any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions

Definition of 'Halogen'

From: GCIDE
  • Halogen \Hal"o*gen\ (h[a^]l"[-o]*j[e^]n), n. [Gr. "a`ls, "alo`s, salt + -gen: cf. F. halog[`e]ne.] (Chem.) An electro-negative element or radical, which, by combination with a metal, forms a haloid salt; especially, chlorine, fluorine, bromine, and iodine; sometimes, also cyanogen. See Chlorine family, under Chlorine. [1913 Webster]

Words containing 'Halogen'