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 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 Sobolev says that these minerals, which include chlorine, lead, and barium, hint towards a subterranean ocean comparable in mass to all the present-day oceans combined. David Grossman, Popular Mechanics, "How a Few Water Drops Could Change What We Know About Plate Tectonics," 6 Aug. 2019 The Russian meteorological agency identified them as isotopes of strontium, two types of barium, and lanthanum but asserted that radiation levels are now normal in cities near the accident, which occurred Aug. 8 in the country’s north. Andrew E. Kramer, BostonGlobe.com, "Russia identifies four radioactive isotopes from nuclear accident," 26 Aug. 2019 The Russian meteorological agency identified them as isotopes of strontium, two types of barium and lanthanum, but asserted that radiation levels are now normal in cities near the accident, which occurred on Aug. 8 in the country’s north. Andrew E. Kramer, New York Times, "Russia Identifies 4 Radioactive Isotopes From Nuclear Accident," 26 Aug. 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.

See More

First Known Use of barium

1808, in the meaning defined at sense 1

History and Etymology for barium

New Latin, from bar-

Keep scrolling for more

Learn More about barium

Time Traveler for barium

Time Traveler

The first known use of barium was in 1808

See more words from the same year

Statistics for barium

Cite this Entry

“Barium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/barium. Accessed 14 Jul. 2020.

Keep scrolling for more

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

Keep scrolling for more

More from Merriam-Webster on barium

Spanish Central: Translation of barium

Nglish: Translation of barium for Spanish Speakers

Britannica.com: Encyclopedia article about barium

Comments on barium

What made you want to look up barium? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

Words for Summer: A Quiz

  • a closeup of a sunflower
  • Which of the following words means “of or relating to summer”?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!