barium sulphate

English Thesaurus

1. a white or colorless mineral (BaSO4); the main source of barium (noun.substance)

hypernym	:	mineral,
definition	:	solid homogeneous inorganic substances occurring in nature having a definite chemical composition (noun.substance)

substance holonym	:	atomic number 56, ba, barium,
definition	:	a soft silvery metallic element of the alkali earth group; found in barite (noun.substance)

2. a white insoluble radiopaque powder used as a pigment (noun.substance)

hypernym	:	sulfate, sulphate,
definition	:	a salt or ester of sulphuric acid (noun.substance)