1. A white insoluble radiopaque powder used as a pigment
   - barium sulfate, blanc fixe 
2. A white or colourless mineral (BaSO4); the main source of barium
   - heavy spar, barite, barytes

Derived forms: barium sulphates

Type of: mineral, sulfate [N. Amer], sulphate [Brit, Cdn]

Encyclopedia: Barium sulphate

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