thorite

English Thesaurus

1. a radioactive mineral consisting of thorium silicate; it is a source of thorium that is found in coarse granite (noun.substance)

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

substance holonym	:	atomic number 90, th, thorium,
definition	:	a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands (noun.substance)