Definition of halogen
: any of the five elements fluorine, chlorine, bromine, iodine, and astatine that form part of group VIIA of the periodic table and exist in the free state normally as diatomic molecules
From the M-W Editors
Recent Examples of halogen from the Web
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Hamburg, Germany (CNN)Julia Reusing stood teary eyed under a strip of halogen lights in Hamburg's red light district as the late summer sun's lingering light turned to dusk.
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Most headlights use one of three different light sources: halogen, high-intensity discharge (HID) or LED.
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Most cars and a lot of trucks today are manufactured with headlamp assemblies that use quartz-halogen bulbs plugged into the back of a large plastic reflector.
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The Viper, which is 15 inches by 8 inches, has halogen lights in the rear that can be activated and was the principal model used in promotional images.
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Halogen lights are the cheapest and can cost between $50 and $500 for a kit.
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A contract to install the four halogen lights along the new path, that is about a third of a project to ultimately extend the walkway up to the old tire lot, was unanimously approved at Monday's Bel Air Board of Town Commissioners meeting.
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It’s tens of thousands per leg, but there’s always the odd stuff, too: a tire, a net, a Styrofoam cooler, a halogen light.
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Independent research on beads collected from New Orleans parades has found toxic levels of lead, bromine, arsenic, phthalate plasticizers, halogens, cadmium, chromium, mercury and chlorine on and inside the beads.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'halogen.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of halogen
Swedish, from hal- + -gen
halogen
Definition of halogen
: containing, using, or being a halogen a halogen lamp
First Known Use of halogen
1880
Medical Dictionary
Learn More about halogen
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Britannica.com: Encyclopedia article about halogen
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