Crossword clues for halogen
Longman Dictionary of Contemporary English
The Collaborative International Dictionary
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.
Douglas Harper's Etymology Dictionary
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.
n. (context chemistry English) Any element of group 7, i.e. fluorine, chlorine, bromine, iodine and astatine, which form a salt by direct union with a metal.
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
The halogens or halogen elements are a group in the periodic table consisting of five chemically related elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). The artificially created element 117 ( ununseptium) may also be a halogen. In the modern IUPAC nomenclature, this group is known as group 17.
The name 'halogen' means 'salt-producing'. When halogens react with metals they produce a wide range of salts, including calcium fluoride, sodium chloride (common table salt), silver bromide and potassium iodide.
The group of halogens is the only periodic table group that contains elements in three of the four main 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 or salts. The middle halogens, that is chlorine, bromine and iodine, are often used as disinfectants. Organobromides are the most important class of flame retardants. Elemental halogens are dangerously to potentially lethally toxic.
Halogen is a five-piece band from Perth, Western Australia. Formed in 1998 by two expatriate New Zealanders - Jasmine Yee and Frans Bisschops.
The halogens are a series of chemical elements.
Halogen may also refer to:
- Halogen lamp, a type of incandescent light bulb
- Halogen (band), an Australian musical group
- Halogen TV, an American cable network
Halogen is the thirteenth studio album by power electronics band Whitehouse, released in April 1994 through their Susan Lawly label. The album's cover was made by artist Trevor Brown, who previously collaborated with the band with their 1991 album Twice Is Not Enough.
Usage examples of "halogen".
The powerful halogen lights mounted on the front of the Hard-suit caught snowy motes of marine vegetation and nervous schools of fish in their beams, but before long, Austin was dropping into the benthic levels, where only the hardiest of fish lived.
Most evenings she could be found beneath the glare of the small halogen lamp, entering data into her computer, scanning images of genetic mutations involving female shark moths exposed to dioxane, corresponding with other researchers in Melbourne and Kyoto, Siberia and London.
Whenever the no-sponsors took a shower, their skin was coated with microbeads of an electronegative halogen solution, which would show up on the Clarissa Frayne scanner.
The generator could have shorted out the electronegative halogen microbeads in their pores.
The abandoned crowns of deposed kings -- the glass within them had shattered and disappeared, and the bridge was now lit by a line of skinny metal poles topped with more-secure pinspot halogens.
Halogen light stretched in broken strips from the station up the beach.
My Audi was still parked in the lot, but a Dakapo halogen torchiere was speared through the windshield.
He walked into the living room and flicked the wall switch, lighting a halogen torchiere in a far corner.
He hit the light switch, the halogen glow from the torchiere by the desk stinging his dark-adapted eyes.
Within the hangar, the Transpacific widebody stood in the glare of halogen lights, nearly hidden behind a gridwork of roll-up scaffolding.
Halogen lamps blasted the tarmac, and the downdraught from the chopper blades snagged his coat tails.
The overhead halogen downlights were dimmed so low as to be all but extinguished.
So there were particulate beds to separate dusts and aerosols, activated charcoal to keep out heavier contaminants, chemi-sorbant beds to remove nitrogen, sulphur compounds, halogens and metal hybrids, and catalytic burners to oxidize anything that couldn't be absorbed.
On it sat a pink Lava Lite, a halogen desk lamp, and a hundred or so compact disk holders spread around him in a semicircle.
With his right hand, he gripped the halogen lamp so hard that his fingers ached.