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    halogen

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    halogen

    Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++
    Related topics: Elements
    hal·o·gen /ˈhælədʒən/ noun  1  [uncountable] a halogen light uses halogen gas to produce light 〔用作光源的〕卤素halogen bulb/lamp/light etc 卤素灯泡/卤素灯等2. HCE[countable, uncountable] one of a group of five simple chemical substances that make compounds easily 卤素
    Examples from the Corpus
    halogen• In exactly the same way, an atom such as a halogen atom in a covalent molecule can show spin-orbit coupling.• Shouting, however, is nothing compared to the stream of flashing halogen that's coming the other way.• It was not possible to ascertain directly how many halogen moieties had ended up on the football.• The unit will not corrode and does not have the sharp beam pattern cut off of modern halogen lights.• In molecules with more than one halogen atom more complicated patterns appear.• It is modern: blonde wood floors, stark white walls, and overhead, tiny halogen lights.• Another type of light bulb you may come across is the tungsten halogen bulb.halogen bulb/lamp/light etc• The unit will not corrode and does not have the sharp beam pattern cut off of modern halogen lights.• The halogen lamp and all of the light is up here and then it bounces up.• It is modern: blonde wood floors, stark white walls, and overhead, tiny halogen lights.• Another type of light bulb you may come across is the tungsten halogen bulb.• Roma table Grillo low-voltage tungsten halogen lamp with dimmer switch.• Some are fitted with halogen bulbs for overall punch, or spots to light specific objects or to highlight.    Origin halogen (1800-1900) Swedish Greek hals “salt”
    hal·o·gen nounChineseSyllable
    gas a halogen Corpus light halogen uses


    halogen
    hal‧o‧gen /ˈhælədʒən/ noun [uncountable]
     Date: 1800-1900
     Language: Swedish
     Origin: Greek hals 'salt'
    1. a halogen light uses halogen gas to produce light
        halogen bulb/lamp/light etc
    2. one of a group of five simple chemical substances that make compounds easily


    halo·genBrE /ˈhælədʒən/ 🔊NAmE /ˈhælədʒən/ 🔊 noun (chemistry 化学) any of a set of five chemical elements, including fluorine, chlorine and iodine, that react with hydrogen to form acids from which simple salts can be made. Halogens, in the form of gas, are used in lamps and cookers/stoves. 卤素