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单词 halogen
释义

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
ha-ˈlä-jə-nəs How to pronounce halogen (audio)
adjective

halogen

2 of 2

adjective

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

Example Sentences

Recent Examples on the Web
Noun
Cost is a critical factor in replacing conventional halogen and LED lighting in vehicles and transportation infrastructure. Sabbir Rangwala, Forbes, 10 June 2022 No halogen, no fluorescence, and no colored light, unless used sparingly and very, very chicly. Tom Rasmussen, Vogue, 18 May 2022 Hybrid trims received an Acceptable headlight rating, likely because its high-beam uses halogen reflectors rather than the LED reflectors that are standard on all other trims. Austin Irwin, Car and Driver, 11 May 2022 However, since the base halogen headlights that come on lower trims are still classified as Poor, the Top Safety Pick+ award was out of reach for Ford’s bestseller. Caleb Miller, Car and Driver, 12 Oct. 2021 Learn from my mistake, save your money, and buy the proven solution: a quality halogen bulb is the only thing that belongs in a reflector housing. Wes Siler, Outside Online, 14 Jan. 2022 Under the glow of a halogen dangling upon a fence stood the seven runners, about to amble off into the dark and return again. Devin Kelly, Longreads, 19 Jan. 2022 And, as identified by the Insurance Institute for Highway Safety, the halogen headlamps on lower-spec Rangers are marginal for effective illumination. Wes Siler, Outside Online, 14 Jan. 2022 The presence of the basic halogen lights on lower trim models, which received a Poor rating, prevented the F-150 from elevating to the highest Top Safety Pick+ award. Caleb Miller, Car and Driver, 12 Oct. 2021
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 See More

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

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
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更新时间:2024/12/22 19:54:48