Engelsk navneord: thorium | |||
1. | thorium (om masse el. substans) 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 | ||
Termer med samme betydning (synonymer) | atomic number 90, Th | ||
Mindre specifikke termer | metal, metallic element | ||
Mere specifikke termer | radiothorium, thorium-228 | ||
Vedrærer disse overordnede termer | monazite, thorite | ||