halogen bulb

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• halogen bulb — A bulb containing a trace of a halogen, such as iodine. A halogen bulb gives off a brighter light. Also see quartz halogen bulb …   Dictionary of automotive terms

• quartz-halogen bulb — A bulb with an inner quartz bulb which holds a tungsten filament. Usually the inner bulb contains an inert gas such as iodine or one of the other five halogen gases. The use of a halogen gas prevents the bulb from turning black and thus reducing… …   Dictionary of automotive terms

• quartz halogen bulb — See quartz halogen bulb …   Dictionary of automotive terms

• tungsten-halogen bulb — A quartz halogen bulb with a tungsten filament …   Dictionary of automotive terms

• halogen — ► NOUN 1) Chemistry any of the group of reactive, non metallic elements fluorine, chlorine, bromine, iodine, and astatine. 2) (before another noun ) using a filament surrounded by halogen vapour: a halogen bulb. ORIGIN from Greek hals salt …   English terms dictionary

• bulb — An electronic device which gives off light by the heating of an element contained with a glass enclosure. The metal base which conducts the electricity may be a barrel with locating pins, or it may have small filament wires protruding from the… …   Dictionary of automotive terms

• halogen headlight — high intensity reflector with inner halogen bulb, precision lens, and 3 prong attachment. Don t touch the glass of a halogen bulb with your fingers. The oil left on the glass will cause the glass to break or reduce the life of the bulb. If the… …   Dictionary of automotive terms

• halogen — I UK [ˈhælədʒen] / US [ˈhælədʒən] noun [countable] Word forms halogen : singular halogen plural halogens chemistry a chemical element belonging to a group of five that combine with metals to form salts II UK [ˈhælədʒen] / US [ˈhælədʒən] adjective …   English dictionary

• halogen headlamps — Tungsten halogen bulb used in sealed beam unit or as separate bulb in composite headlamp …   Dictionary of automotive terms

• halogen — hal|o|gen [ˈhælədʒən] n [U] [Date: 1800 1900; : 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 …   Dictionary of contemporary English

• halogen — hal|o|gen1 [ hælədʒən ] noun count SCIENCE a chemical element belonging to a group of five that combine with metals to form salts halogen hal|o|gen 2 [ hælədʒən ] adjective using halogen to produce light or heat: a halogen bulb/lamp/light …   Usage of the words and phrases in modern English