Noun: barium sulphate
- A white insoluble radiopaque powder used as a pigment
"The patient drank a barium sulphate solution before the X-ray to enhance imaging of the digestive tract";
- barium sulfate, blanc fixe
- A white or colourless mineral (BaSO₄); the main source of barium
"barium sulphate is often used as a weighting agent in drilling fluids";
- heavy spar, barite, barytes
Derived forms: barium sulphates
Type of: mineral, sulfate [N. Amer], sulphate [Brit, Cdn]
Encyclopedia: Barium sulphate