thorium

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noun tho·ri·um \ ˈthȯr-ē-əm \

Definition of thorium

:a radioactive metallic element that is obtained especially from monazite and is usually associated with rare earths — see Chemical Elements Table

Recent Examples of thorium from the Web

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Origin and Etymology of thorium

New Latin, from Old Norse Thōrr Thor


Medical Dictionary

thorium

play
noun tho·ri·um \ ˈthōr-ē-əm, ˈthȯr- \

medical Definition of thorium

:a radioactive metallic element that occurs combined in minerals and is usually associated with rare earths symbol Th — see Chemical Elements Table

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