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Answer for the clue "Fluorine or chlorine, e.g ", 7 letters:
halogen

Alternative clues for the word halogen

Word definitions for halogen in dictionaries

The Collaborative International Dictionary Word definitions in 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; ...

Douglas Harper's Etymology Dictionary Word definitions in 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 ...

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.