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barium sulfate

noun, Chemistry
1.
a white, crystalline, water-insoluble powder, BaSO 4 , used chiefly in the synthesis of pigments, as in paints and printing inks, and, because of its radiopacity, for x-ray diagnosis in medicine.
Origin
1870-1875
1870-75
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for barium sulfate
  • For the test, barium sulfate is inserted into the rectum using a small, flexible tube.
  • Two forms of barium, barium sulfate and barium carbonate, are often found in nature as underground ore deposits.
barium sulfate in Medicine

barium sulfate n.
A fine white powder used as a pigment and as a contrast medium in x-ray photography of the digestive tract.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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barium sulfate in Science
barium sulfate  
A fine white powder used in making textiles, rubber, and plastic. It is also used in diagnostic imaging of the digestive tract. Barium sulfate occurs in nature as the mineral barite. Chemical formula: BaSO4.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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