Preferred Label : thorium;
RADLEX synonyms : Th;
Definition : Thorium. A radioactive element of the actinide series of metals. It has an atomic
symbol Th, atomic number 90, and atomic weight 232.04. It is used as fuel in nuclear
reactors to produce fissionable uranium isotopes. Because of its radioopacity, various
thorium compounds are used to facilitate visualization in roentgenography. [MeSH];
UMLS CUI (RADLEX) : C0039994;
Origin ID : RID11940;
UMLS CUI : C0039994;
Currated CISMeF NLP mapping
Semantic type(s)
UMLS correspondences (same concept)
Thorium. A radioactive element of the actinide series of metals. It has an atomic
symbol Th, atomic number 90, and atomic weight 232.04. It is used as fuel in nuclear
reactors to produce fissionable uranium isotopes. Because of its radioopacity, various
thorium compounds are used to facilitate visualization in roentgenography. [MeSH]