halogen

1 of 2

noun

hal·​o·​gen ˈha-lə-jən How to pronounce halogen (audio)
: 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
halogenous adjective

halogen

2 of 2

adjective

: containing, using, or being a halogen
a halogen lamp

Examples of halogen in a Sentence

Recent Examples on the Web
Noun
Another ladder led to the lantern room, where a thousand-watt halogen lamp made the space uncomfortably hot. Dorothy Wickenden, The New Yorker, 30 Oct. 2023 Incandescent and halogen lights cast a warmer, golden light but require higher watts, leading to a higher energy bill each month. Maria Conti, Better Homes & Gardens, 1 Aug. 2023 But most if not all other incandescents will struggle to meet the new efficiency standards, and the same goes for a more recent generation of halogen lights. Hiroko Tabuchi, New York Times, 1 Aug. 2023 The switch means were incandescent or halogen incandescent – which accounted for roughly 30% of light bulbs sold in the U.S. in 2020 – will soon be a thing of the past. Leada Gore | Lgore@al.com, al, 31 July 2023 For instance, a 30–50-watt LED bulb is equivalent to a halogen bulb of around 500 watts. Kat De Naoum, Better Homes & Gardens, 5 July 2023 The Trump administration and the big bulb manufacturers tried to defuse the bomb and keep making halogen and other popular and profitable bulbs, but then President Joe Biden got elected, and 45 lumens became the law once again. Lloyd Alter, Treehugger, 25 Jan. 2023 Stock Halogen Low-Beam For a visual baseline, here is a view of the light distribution from the stock halogen low-beam headlight on our 2004 Toyota Corolla. Katherine Keeler, Car and Driver, 31 Aug. 2023 Also not accepted at the event are large household appliances and Freon-containing appliances, incandescent or halogen bulbs, wet-cell lead acid batteries such as car or sump pump batteries, batteries of any kind over 11 pounds and materials generated in the course of operating a business. David Sharos, Chicago Tribune, 18 July 2023
Adjective
While halogen filaments deliver 360-degree illumination, LED bulbs typically emit light with a pair of back-to-back 180-degree planes. Daniel Gray, Ars Technica, 16 Mar. 2020 On Home Depot’s website, the group found different prices quoted for paint, light bulbs, toilet paper, caulk guns, halogen floor lamps, screwdrivers and more. Levi Sumagaysay, The Mercury News, 25 June 2019 Test Results: Maximum Cubby Storage Exterior Measurement Comparisons Every 124 Spider comes standard with a manual softtop that’s effortless to fold down, plus halogen headlights and LED taillights. Car and Driver, 2 Nov. 2017

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'halogen.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Noun

Swedish, from hal- + -gen

First Known Use

Noun

1842, in the meaning defined above

Adjective

1880, in the meaning defined above

Time Traveler
The first known use of halogen was in 1842

Dictionary Entries Near halogen

Cite this Entry

“Halogen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/halogen. Accessed 28 Mar. 2024.

Kids Definition

halogen

1 of 2 noun
hal·​o·​gen ˈhal-ə-jən How to pronounce halogen (audio)
: any of the elements fluorine, chlorine, bromine, iodine, and astatine

halogen

2 of 2 adjective
: containing, using, or being a halogen
a halogen lamp

Medical Definition

halogen

noun
halo·​gen ˈhal-ə-jən How to pronounce halogen (audio)
: any of the five elements fluorine, chlorine, bromine, iodine, and astatine that form part of group VII A of the periodic table and exist in the free state normally as diatomic molecules
halogenous adjective

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