'barium sulphate' definitions:
Definition of 'barium sulphate'
(from WordNet)
noun
A white insoluble radiopaque powder used as a pigment [syn: barium sulphate, barium sulfate, blanc fixe]
noun
A white or colorless mineral (BaSO4); the main source of barium [syn: heavy spar, barite, barytes, barium sulphate]