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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Medical Dictionary

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

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