barium sulfate

noun

Definition of barium sulfate 

: 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

First Known Use of barium sulfate

1865, in the meaning defined above

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The first known use of barium sulfate was in 1865

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More Definitions for barium sulfate

barium sulfate

noun

Medical Definition of barium sulfate 

: a colorless crystalline insoluble salt BaSO4 occurring in nature as barite and used medically chiefly as a radiopaque substance

More from Merriam-Webster on barium sulfate

Britannica.com: Encyclopedia article about barium sulfate

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