barium

noun
bar·​i·​um | \ ˈber-ē-əm How to pronounce barium (audio) \

Definition of barium

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

Examples of barium in a Sentence

Recent Examples on the Web Those wells contained mercury, boron, calcium, sulfate and barium — all of which are potential indicators of coal ash contaminants. ProPublica, "A Power Company’s Quiet Land-Buying Spree Could Shield It From Coal Ash Cleanup Costs," 24 Nov. 2020 Among the substances being tested for are cyanide, barium and others specific to CS gas, said Diane Dulken, a spokesperson for the city’s Bureau of Environmental Services, which oversees Portland’s sewer and stormwater systems. oregonlive, "Portland to learn if tear gas got into water drainage stormwater system later in August," 6 Aug. 2020 The state is asking Portland to collect and analyze stormwater for chromium, hexavalent chromium, lead, zinc, copper, barium and perchlorate. oregonlive, "‘Unprecedented’ use of tear gas against Portland protesters prompts state regulators to call for environmental testing," 31 July 2020 In addition, clusters of four ions (two ytterbium, two barium) can be split in half, or two clusters of two ions can be merged. John Timmer, Ars Technica, "New entry in commercial quantum computing, using entirely different tech," 3 Mar. 2020 Ionized by sunlight, the barium would create a ring of moving plasma that emits radio waves: essentially a space version of a magnetron, the gadget used in microwave ovens. Richard Stone, Science | AAAS, "U.S. tests ways to sweep space clean of radiation after nuclear attack," 26 Dec. 2019 The elevation of the land is only about 7½ feet, and an environmental report released last month found that soil is contaminated with toxic levels of arsenic, barium and lead. Rick Maese, The Denver Post, "As waters rise, so do concerns for sports teams along coast," 18 Oct. 2019 The elevation of the land is only about 7½ feet, and an environmental report released last month found that soil is contaminated with toxic levels of arsenic, barium and lead. Rick Maese, courant.com, "As waters rise, so do concerns for sports teams along coast," 18 Oct. 2019 But a scatter diagram presented in the lawsuit shows its ratios of barium to nickel and strontium to zinc fall far outside the norms for Kona. Los Angeles Times, "The Kona coffee you buy from Costco and Walmart? It might be fake," 15 Sep. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'barium.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of barium

1808, in the meaning defined at sense 1

History and Etymology for barium

New Latin, from bar-

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Time Traveler for barium

Time Traveler

The first known use of barium was in 1808

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Statistics for barium

Last Updated

7 Dec 2020

Cite this Entry

“Barium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/barium. Accessed 22 Jan. 2021.

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More Definitions for barium

barium

noun
How to pronounce barium (audio)

English Language Learners Definition of barium

: a chemical element that is a soft silver-white metal

barium

noun
bar·​i·​um | \ ˈbar-ē-əm, ˈber- How to pronounce barium (audio) \

Medical Definition of barium

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

More from Merriam-Webster on barium

Nglish: Translation of barium for Spanish Speakers

Britannica.com: Encyclopedia article about barium

Comments on barium

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