anatase

[an-uh-teys, -teyz]

noun

Mineralogy.

1. a naturally occurring crystalline form of titanium dioxide, TiO 2 .

anatase

/ ˈænəˌteɪz /

noun

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

Word History and Origins

Origin of anatase¹

1835–45; < French < Greek anátasis, equivalent to ana- ana- + ta- (variant stem of teínein to stretch) + -sis -sis

Word History and Origins

Origin of anatase¹

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

Example Sentences

Proposed alternatives include minerals such as calcium carbonate, alpha alumina, rutile and anatase titania, cubic zirconia, and even diamond.

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The university in New Haven, Connecticut, noted that a 1973 study conducted by McCrone Research Institute in Chicago first discovered that the titanium compound anatase was used in the map's ink, and Yale's own in-house analysis confirms it using the latest technology available.

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Nanoparticles tend to heat up a little when they absorb UV radiation, says Paul Westerhoff, a professor at Arizona State University’s School of Sustainable Engineering and the Built Environment, and some research suggests that this process could cause oxidative damage to the skin, particularly with one form, called anatase, when it was delivered in uncoated particles.

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For example, in cassiterite it is given as a : c = 1 : 0.67232 or simply as c = 0.67232, a being unity; and in anatase as c = 1.7771.

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Examples of substances which crystallize in this class are cassiterite, rutile, anatase, zircon, thorite, vesuvianite, apophyllite, phosgenite, also boron, tin, mercuric iodide.

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