thorium

Plural: thoriums

Noun

• A radioactive metallic element used in nuclear applications.
• 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.

Examples

• Playing THORIUM allowed him to use his ’M’ and score big.

Synonyms

atomic number 90, Th, thorinum

Related Words

Thor, thorite, thorotrast