Definition of THORIUM

thorium

Meanings

Plural: thoriums

Noun

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

Origin / Etymology

From Thor + -ium.

Synonyms

atomic number 90, Th, thorinum

Scrabble Score: 12

thorium is a valid Scrabble (US) TWL word
thorium is a valid Scrabble Word in Merriam-Webster MW Dictionary
thorium is a valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 13

thorium is a valid Words With Friends word