halogen

[ hal-uh-juhn, -jen, hey-luh- ]

See synonyms for halogen on Thesaurus.com

nounChemistry.

any of the electronegative elements, fluorine, chlorine, iodine, bromine, and astatine, that form binary salts by direct union with metals.

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Origin of halogen

First recorded in 1835–45; halo- + -gen

Other words from halogen

ha·log·e·nous [ha-loj-uh-nuhs], /hæˈlɒdʒ ə nəs/, adjective

Words Nearby halogen

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use halogen in a sentence

For decades, halogens had been destroying the high-flying ozone.
Widely used pesticides may threaten Earth’s ozone layer | Katie Grace Carpenter | February 18, 2022 | Science News For Students
Compared to incandescent bulbs or halogen lighting, LEDs use a small amount of electricity.
The best LED light strips to brighten every corner of your life | Quinn Gawronski | January 28, 2022 | Popular-Science
They’re halogen bulb— just like what came stock on the Ranger—only a little higher quality.
A $150 Reminder That LED Headlight Bulbs Don’t Work | wsiler | January 14, 2022 | Outside Online
That’s roughly equal to a 300W halogen floodlight, which is plenty for outdoor security use.
The best floodlight: Light up the night and the driveway with these outdoor lighting fixtures | Irena Collaku | July 13, 2021 | Popular-Science
New, long-lasting LED bulbs and smartphone controls have carried traditional halogen floodlights into the 21st century, while additional built-in cameras and alarms add a new layer to create security lighting.
The best floodlight: Light up the night and the driveway with these outdoor lighting fixtures | Irena Collaku | July 13, 2021 | Popular-Science

The light of halogen lamps is slightly more “whiteish” than incandescent lamps.
The Light Bulb Is Dead. Long Live the Light Bulb! | Ethan Biery | December 20, 2013 | THE DAILY BEAST
There is a group of closely allied elements to which the name halogen (salt-producer) has been given.
A Textbook of Assaying: For the Use of Those Connected with Mines. | Cornelius Beringer and John Jacob Beringer
Compounds containing oxides and fluorides, &c., do not lend themselves to the method of determining the halogen by difference.
A Textbook of Assaying: For the Use of Those Connected with Mines. | Cornelius Beringer and John Jacob Beringer
We may, in fact, consider that the descriptive study of the various halogen compounds dates from about this time.
Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 | Various
The same absorbent quantitatively takes up any halogen and sulphur which may be present.
Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 | Various
The same as Method 1, except that after ignition of the saponified mixture the halogen was determined by weighing as silver iodid.
The Propaganda for Reform in Proprietary Medicines, Vol. 2 of 2 | Various

British Dictionary definitions for halogen

halogen

/ (ˈhæləˌdʒɛn) /

noun

any of the chemical elements fluorine, chlorine, bromine, iodine, and astatine. They are all monovalent and readily form negative ions

Origin of halogen

C19: from Swedish; see halo-, -gen

Derived forms of halogen

halogenoid, adjective
halogenous (həˈlɒdʒɪnəs), adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for halogen

halogen

[ hăl′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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