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barium Definition

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barium
noun(bar-i-um)
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
barium
noun(bar-i-um)
barium sulfate
barium
geographical name(bar-i-um)
commune and port on the Adriatic Sea in southeastern Italy; capital of the region of Puglia population 332,143
barium
noun(bar-i-um)
a crystalline insoluble compound BaSO4 that is used especially as a pigment and extender, as a filler (as in fluids used in gas and oil drilling), and as a substance opaque to X-rays in medical photography of the digestive tract

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