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thorianite

[thawr-ee-uh-nahyt, thohr-] /ˈθɔr i əˌnaɪt, ˈθoʊr-/
noun
1.
a rare mineral, mainly thoria, ThO 2 , but also containing uranium, cerium, and other rare-earth metals, occurring in small, black, cubic crystals: notable for its radioactivity and used as a minor source of thorium.
Origin of thorianite
1900-1905
1900-05; thorian (thori(a) + -an) + -ite1
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Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for thorianite

thorianite

/ˈθɔːrɪəˌnaɪt/
noun
1.
a rare black mineral consisting of thorium and uranium oxides. Formula: ThO2.U3O8
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
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