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anatase

[an-uh-teys, -teyz]
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noun Mineralogy.
  1. a naturally occurring crystalline form of titanium dioxide, TiO2.
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Origin of anatase

1835–45; < French < Greek anátasis, equivalent to ana- ana- + ta- (variant stem of teínein to stretch) + -sis -sis
Also called octahedrite.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for anatase

anatase

noun
  1. a rare blue or black mineral that consists of titanium oxide in tetragonal crystalline form and occurs in veins in igneous rocks. Formula: TiO 2Also called: octahedrite
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Word Origin

C19: from French, from Greek anatasis an extending (referring to the length of the crystals), from anateinein to stretch out
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