Princeton's WordNet(4.00 / 1 vote)Rate this definition:

1. halogen(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

Wiktionary(0.00 / 0 votes)Rate this definition:

1. halogen(Noun)

   Any element of group 7, i.e. fluorine, chlorine, bromine, iodine and astatine, which form a salt by direct union with a metal.

Origin: From ἅλς + -gen, referring to elements which produce a salt in union with a metal.

Webster Dictionary(0.00 / 0 votes)Rate this definition:

1. Halogen(noun)

   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

Origin: [Gr. "a`ls, "alo`s, salt + -gen: cf. F. halogne.]

Freebase(0.00 / 0 votes)Rate this definition:

1. Halogen

   The halogens or halogen elements are a group in the periodic table consisting of five chemically related elements, fluorine, chlorine, bromine, iodine, and astatine. The artificially created element 117 may also be a halogen. In the modern IUPAC nomenclature, this group is known as group 17. The group of halogens is the only periodic table group which contains elements in all three familiar states of matter at standard temperature and pressure. All of the halogens form acids when bonded to hydrogen. Most halogens are typically produced from minerals of salts. The middle halogens, that is, chlorine, bromine and iodine, are often used as disinfectants. The halogens are also all toxic.

Chambers 20th Century Dictionary(0.00 / 0 votes)Rate this definition:

1. Halogen

   hal′o-jen, n. a substance which by combination with a metal forms a saline compound.—adjs. Halog′enous; Ha′loid, like sea-salt.—ns. Hal′omancy, divination by means of salt; Hal′ophyte, the salt-wort, found in salt-marshes, &c. [Gr. hals, salt, genēs, producing.]

Editors Contribution(0.00 / 0 votes)Rate this definition:

1. halogen

   Halogen (noun) involves five elements such as fluorine, chlorine, bromine, iodine and astatine. That part in a group VIIA of the periodic table.

   Halogen is a negative ions that react with most metals to form salts.

2. halogen

   Is a group in the periodic table consisting of five chemically related elements with similar properties.

   Any of a group of five nonmetallic elements with similar properties. The halogens are fluorine, chlorine, bromine, iodine, and astatine.

Numerology

1. Chaldean Numerology

   The numerical value of halogen in Chaldean Numerology is: 2

2. Pythagorean Numerology

   The numerical value of halogen in Pythagorean Numerology is: 8

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