| 单词 | uraninite |
| 释义 | uraninite[ yoo-ran-uh-nahyt, -rey-nuh- ] / yʊˈræn əˌnaɪt, -ˈreɪ nə- / nouna mineral, probably originally uranium dioxide, UO2, but altered by radioactive decay, and usually containing uranium trioxide, lead, radium, and helium, occurring in several varieties, including pitchblende: the most important ore of uranium. Origin of uraniniteFirst recorded in 1875–80; uran(ium) + -in2 + -ite1 Words nearby uraniniteurania, Uranian, uranic, uranic oxide, uranide, uraninite, uraniscus, uranism, uranite, uranite group, uranium Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for uraniniteuraninite / (jʊˈrænɪˌnaɪt) / nouna blackish heavy radioactive mineral consisting of uranium oxide in cubic crystalline form together with radium, lead, helium, etc: occurs in coarse granite. Formula: UO 2 Word Origin for uraniniteC19: see uranium, -in, -ite 1 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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