thorium

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Pronunciation

• enPR: thôr'ēəm, IPA: /ˈθɔːɹiəm/

Noun

thorium (uncountable)

1. A chemical element (symbol Th) with atomic number 90: a weakly radioactive, malleable, moderately hard silvery metal that tarnishes black when exposed to air.

Synonyms

• thorinum (former alternative form; obsolete)

Related terms

• Thor
• thorite
• thorotrast

Translations

• French: thorium
• German: Thorium
• Italian: torio
• Portuguese: tório
• Russian: то́рий
• Spanish: torio

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