Concept information
Preferred term
Thorium
Type
-
Topical Descriptor
Broader concept
Scope note
- 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.
URI
http://www.yso.fi/onto/mesh/D013910
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