WordNet: Th, alkuainenumero 90, torium

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

• hypernym metalli, metalliaines

• hyponym radiotorium, toriumin isotooppi 228

• substance holonym monatsiitti

• substance holonym toriitti

Th

• (englanti) Th (synonyymi)

alkuainenumero 90

• (englanti) atomic number 90 (synonyymi)

torium

• (englanti) thorium (synonyymi)