Halogen
[hal-uh-juh n, -jen, hey-luh-] /ˈhæl ə dʒən, -ˌdʒɛn, ˈheɪ lə-/
noun, Chemistry.
1.
any of the electronegative elements, fluorine, chlorine, iodine, bromine, and astatine, that form binary salts by direct union with metals.
/ˈhæləˌdʒɛn/
noun
1.
any of the chemical elements fluorine, chlorine, bromine, iodine, and astatine. They are all monovalent and readily form negative ions
n.
general name for elements of the chlorine family, 1842, from Swedish, coined by Swedish chemist Baron Jöns Jakob Berzelius (1779-1848), literally “salt-producer,” from Greek hals “salt” (see halo-) + -gen “giving birth to” (see -gen); so called because a salt is formed in reactions involving these four elements.
halogen hal·o·gen (hāl’ə-jən)
n.
Any of a group of five chemically related nonmetallic elements including fluorine, chlorine, bromine, iodine, and astatine.
halogen
(hāl’ə-jən)
Any of a group of five nonmetallic elements with similar properties. The halogens are fluorine, chlorine, bromine, iodine, and astatine. Because they are missing an electron from their outermost shell, they react readily with most metals to form salts. See Periodic Table.
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- Halogenate
[hal-uh-juh-neyt, hey-luh-] /ˈhæl ə dʒəˌneɪt, ˈheɪ lə-/ verb (used with object), halogenated, halogenating. Chemistry. 1. to treat or combine with a . 2. to introduce a into (an organic compound). /ˈhælədʒəˌneɪt/ verb 1. (chem) to treat or combine with a halogen
- Halogen-lamp
noun 1. a gas-filled, high-intensity incandescent lamp having a tungsten filament and containing a small amount of a halogen, such as iodine, that vaporizes on heating and redeposits any evaporated tungsten particles back onto the filament: used especially in motion-picture projectors and automobile headlights.
- Haloid
[hal-oid, hey-loid] /ˈhæl ɔɪd, ˈheɪ lɔɪd/ Chemistry adjective 1. Also, halogenoid [hal-uh-juh-noid, hey-luh-] /ˈhæl ə dʒəˌnɔɪd, ˈheɪ lə-/ (Show IPA). resembling or derived from a halogen. noun 2. a haloid salt or derivative from a halogen. /ˈhælɔɪd/ adjective 1. resembling or derived from a halogen: a haloid salt noun 2. a compound containing halogen atoms […]
- Halhul
full of hollows, a town in the highlands of Judah (Josh. 15:58). It is now a small village of the same name, and is situated about 5 miles north-east of Hebron on the way to Jerusalem. There is an old Jewish tradition that Gad, David’s seer (2 Sam. 24:11), was buried here.
- Halgol
language A simple language from Hewlett-Packard for communicating with devices such as modems and X.25 PADs. (1995-04-12)