follow Dictionary.com

What is the X in X-mas?

thorite

[thawr-ahyt, thohr-] /ˈθɔr aɪt, ˈθoʊr-/
noun
1.
a rare mineral, thorium silicate, ThSiO 4 , occurring in the form of yellow or black crystals.
Origin
1825-1835
1825-35; thor- (as in thoria, thorium) + -ite1, modeled on Swedish thorit
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for thorite
  • Other ore minerals with higher thorium contents, such as thorite, would be more likely sources if demand significantly increased.
British Dictionary definitions for thorite

thorite

/ˈθɔːraɪt/
noun
1.
a yellow, brownish, or black radioactive mineral consisting of tetragonal thorium silicate. It occurs in coarse granite and is a source of thorium. Formula: ThSiO4
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Encyclopedia Article for thorite

thorium silicate, ThSiO4, one of the most important thorium minerals. Almost always altered by hydration, it occurs in syenite near Brevik, Nor., and in the gem gravels of Sri Lanka. Thorite is mined commercially in the United States at Cripple Creek, Colo., and at Hall Mountain, Idaho. Although the mineral is usually light brown, an orange-yellow gem variety known as orangite occurs in Madagascar. For detailed physical properties, see silicate mineral (table)

Learn more about thorite with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source

Word of the Day

Difficulty index for thorite

Few English speakers likely know this word

Word Value for thorite

10
9
Scrabble Words With Friends