any of the electronegative elements, fluorine, chlorine, iodine, bromine, and astatine, that form binary salts by direct union with metals.
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- ha·log·e·nous [ha-loj-uh-nuhs], /hæˈlɒdʒ ə nəs/, adjective
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.
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.
The same absorbent quantitatively takes up any halogen and sulphur which may be present.
The same as Method 1, except that after ignition of the saponified mixture the halogen was determined by weighing as silver iodid.
British Dictionary definitions for halogen
any of the chemical elements fluorine, chlorine, bromine, iodine, and astatine. They are all monovalent and readily form negative ions
- 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
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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.