单词	helium
释义	helium noun he·​li·​um ˈhē-lē-əm  ˈhēl-yəm : a chemical element of the noble gas group found especially in natural gases and used chiefly for inflating airships and balloons, as a coolant for superconductors, and as a component of inert atmospheres (as in welding) see Chemical Elements Table Example Sentences Recent Examples on the Web Unlike the Earth, Jupiter has no solid surface and instead is a gas giant, made mostly of hydrogen and helium. Adela Suliman, Washington Post, 20 Aug. 2022 In fact, most fusion projects focus on the absolute lightest elements: hydrogen and helium. Caroline Delbert, Popular Mechanics, 11 Aug. 2022 Jupiter’s atmosphere comprises hydrogen and helium yet contains a wide variety of clouds of different shapes and sizes. Jamie Carter, Forbes, 6 July 2022 Athletic director Trev Alberts said on his radio show Monday night that a global shortage of helium led to the decision to end the practice. From Usa Today Network And Wire Reports, USA TODAY, 25 May 2022 For the next two hours, the 35-foot tall, 30-foot wide balloon filled with 6,500 cubic feet of helium will lead the way for a steady stream of marching bands, equestrian units, Kentucky notables, and colorful floats. Kirby Adams, The Courier-Journal, 28 Apr. 2022 About 130 metric tons of liquid helium—about the weight of a midsize blue whale—keep 36,000 metric tons of the collider under 4 kelvin. Daniel Garisto, Scientific American, 27 Apr. 2022 To chill them, the collider uses 150 tons of liquid helium. Manasee Wagh, Popular Mechanics, 22 Apr. 2022 The evidence comes in the form of isotopes of noble gases like helium and neon. Joshua Hawkins, BGR, 14 Aug. 2022 See More Word History Etymology New Latin, from Greek hēlios First Known Use 1871, in the meaning defined above Kids Definition helium noun he·​li·​um ˈhē-lē-əm  : a very light gaseous chemical element that is found in various natural gases, will not burn, and is used in balloons Medical Definition helium noun he·​li·​um ˈhē-lē-əm  : a light colorless nonflammable gaseous element found especially in natural gases and used chiefly for inflating airships and balloons, for filling incandescent lamps, and for cryogenic research —symbol He see Chemical Elements Table
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