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单词 thorianite
释义

thorianite

[ thawr-ee-uh-nahyt, thohr- ]
/ ˈθɔr i əˌnaɪt, ˈθoʊr- /

noun

a rare mineral, mainly thoria, ThO2, 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

1900–05; thorian (thori(a) + -an) + -ite1

Words nearby thorianite

Thoreau, Thoreau, Henry David, Thorez, Thorfinn Karlsefni, thoria, thorianite, thorite, thorium, thorium dioxide, thorium series, thorn
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for thorianite

  • The richest known source is thorianite, which consists mainly of thorium oxide, and contains 9.5 cc.

    Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2|Various

  • Much the best practical source of helium is thorianite, a mineral imported from Ceylon for the manufacture of thoria.

    Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2|Various

British Dictionary definitions for thorianite

thorianite
/ (ˈθɔːrɪəˌnaɪt) /

noun

a rare black mineral consisting of thorium and uranium oxides. Formula: ThO 2 .U 3 O 8
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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更新时间：2025/2/3 4:37:32