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 (ăn′ə-tās′, -tāz′)
A rare blue or light yellow to brown crystalline mineral, the rarest of three forms of titanium dioxide, TiO2, used as a pigment, especially in paint.

[French, from Greek anatasis, extension (from its long crystals), from anateinein, anata-, to extend : ana-, ana- + teinein, to stretch; see ten- in Indo-European roots.]


(Minerals) a rare blue or black mineral that consists of titanium oxide in tetragonal crystalline form and occurs in veins in igneous rocks. Formula: TiO2. Also called: octahedrite
[C19: from French, from Greek anatasis an extending (referring to the length of the crystals), from anateinein to stretch out]


(ˈæn əˌteɪs, -ˌteɪz)

a naturally occurring crystalline form of titanium dioxide, TiO2.
[1835–45; < French < Greek anátasis extension, derivative (with -sis -sis) of anateínein to extend (ana- ana- + teínein to stretch)]
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References in periodicals archive ?
2] and, more precisely, its phase called anatase are both photocatalysts [6] and possess hydrophobic as well as UV-light induced superhydrophilic properties [7].
Based on grade, the titanium dioxide market has been classified into rutile and anatase.
These peaks characterized that titania nanoparticles were mostly in the anatase (crystalline) phase.
This compound have three crystalline phases: rutile (tetragonal structure), anatase (octahedral structure), brookite (orthorhombic structure), which according to the requirement of the electrostatic valence rule, each oxygen atom is shared by three octahedra.
Sharp and intense peaks originated from indexed planes of (1 0 1), (1 0 3), (0 0 4), (1 1 2), (2 0 0), (1 0 5), (2 1 1), (2 0 4) and (1 1 6) of anatase Ti[O.
It is found in three crystalline phases: brookite (orthorhombic), anatase (tetragonal) and rutile (tetragonal), wherein the anatase and rutile phases are commonly used in photocatalysis, which the anatase phase is considered the highest catalytic activity (Linsebigler, Lu, & Yates, 1995).
Therefore, preparation of anatase phase of titania nanomaterials has attracted increasing attention and many methods have been developed, such as anodization of titanium foil [14, 15], the hydrothermal treatment of Ti[O.
2] nanoparticles, which have an anatase crystalline phase with superior PC activity, were directly synthesized over TPU nanofibers and the coated membranes were characterized using scanning electron microscopy (SEM) and X-ray diffractometry.
It produces TiO2 in two crystalline forms, rutile and anatase to impart whiteness, brightness, opacity, and durability for products, including paints, coatings, plastics, paper, fibers, and ceramics, as well as for various specialty products.
anatase, rutile and brookite) and perovskite (CaTi[O.
It can be classified into anatase, rutile and brokite, of which only anatase and rutile are commercially important.
Their topics include the nanomechanical characterization of cement-based materials, the novel synthesis of four-nanometer anatase nanoparticles at room temperature obtained from titania nanotube structures by anodizing titanium, nanotechnology for environmental control and remediation, applications of nanotechnology in cancer, various nanostructures to enhance the efficiency of solar-photon conversions, and the convergence of nanotechnology and microbiology.