单词	barium
释义	barium noun bar·​i·​um ˈber-ē-əm  1 : a silver-white metallic element of the alkaline earth metal group with atomic number 56 that is used especially in drilling fluid, as a getter in vacuum tubes, and as a contrast agent in medical imaging see Chemical Elements Table 2 : barium sulfate Example Sentences Recent Examples on the Web Whoever produced these stars has mastered the barium chlorate concoction that gives fireworks the toxic-green sheen of Ghostbusters’ Slimer. Popular Mechanics Editors, Popular Mechanics, 30 June 2022 Green comes from the compound barium chloride, blue from copper chloride. Popular Mechanics Editors, Popular Mechanics, 30 June 2022 So the company decided to change elements, switching to barium ions instead. John Timmer, Ars Technica, 3 Mar. 2022 But upon further analysis, Hahn realized the element formed was not atomic number 93, but atomic number 56, barium, roughly have the size of uranium. Melanie Fine, Forbes, 18 Oct. 2021 His optimism is buoyed by Commonwealth's successful summer test of new electromagnets engineered with superconductors made from rare earth barium copper oxide. Christopher Helman, Forbes, 2 Jan. 2022 Other counterfeit products may contain lead or other toxic chemicals, like cadmium and barium, heavy metals that are sometimes improperly used in blocks, figurines and costume jewelry. Rebecca Lurye, courant.com, 26 Nov. 2021 Residents not only inhaled air pollutants but were also exposed to toxic chemicals, metals such as barium, and oil residue that settled inside their homes, as shown by dust sampling. Los Angeles Times, 5 Nov. 2021 Analysis of 28 other luster dust samples for the bakery marked as inedible found elevated levels of several other metals including aluminum, barium, lead and nickel. Victoria Forster, Forbes, 28 Oct. 2021 See More Word History Etymology New Latin, from bar- First Known Use 1808, in the meaning defined at sense 1 Phrases Containing barium barium sulfate barium sulfate Medical Definition barium noun bar·​i·​um ˈbar-ē-əm, ˈber-  1 : a silver-white malleable toxic bivalent metallic element of the alkaline-earth group that occurs only in combination —symbol Ba see Chemical Elements Table 2 : barium sulfate
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