anatase

[an-uh-teys, -teyz]

noun Mineralogy.

a naturally occurring crystalline form of titanium dioxide, TiO2.

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. 2019

Examples from the Web for anatase

Minute crystals of brookite have been detected with anatase and rutile in the iron-ore of Cleveland in Yorkshire.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3|Various
There is no distinct cleavage (rutile and anatase have cleavages); hardness 5-6; sp.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3|Various
Titanic acid occurs in nature crystallized in anatase, arkansite, brookite, and rutile.
A System of Instruction in the Practical Use of the Blowpipe|Anonymous

British Dictionary definitions for anatase

anatase

noun

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

Word Origin for anatase

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