halogen

• POS: Noun
• HYPHEN: hal=o=gen

CIDE DICTIONARY

halogen, n. [Gr. "a`ls, "alo`s, salt + -gen: cf. F. halogène.].

 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]

OXFORD DICTIONARY

halogen, n. Chem. any of the group of non-metallic elements: fluorine, chlorine, bromine, iodine, and astatine, which form halides (e.g. sodium chloride) by simple union with a metal.

Derivative

halogenic adj.

Etymology

Gk hals halos salt