[ awt-n-ahyt, oh-tuhn-ahyt ]
/ ˈɔt nˌaɪt, oʊˈtʌn aɪt /
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a yellow mineral, a hydrous calcium uranium phosphate, CaU2P2O12⋅8H2O, occurring in crystals as nearly square tablets: a minor ore of uranium.
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Origin of autunite
First recorded in 1850–55; named after Autun, a city in eastern France near source of supply; see -ite1
Words nearby autunite
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for autunite
Autunite, a hydrous phosphate of uranium and calcium, crystallizing in the rhombic system in yellow plates.
British Dictionary definitions for autunite
/ (ˈɔːtəˌnaɪt) /
a yellowish fluorescent radioactive mineral consisting of a hydrated calcium uranium phosphate in tetragonal crystalline form. It is found in uranium ores. Formula: Ca(UO 2) 2 (PO 4) 2 .10–12H 2 O
Word Origin for autunite
C19: named after Autun in France, one of the places where it was found, + -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