tridymite

(ˈtrɪdɪˌmaɪt) n (Minerals) a form of silica found in igneous rock

Thesaurus

Noun

tridymite - a mineral form of silica mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical compositionsilica, silicon dioxide, silicon oxide - a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite

Tridymite

tridymite

[′trid·ə‚mīt] (mineralogy) SiO₂ A white or colorless crystal occurring in minute, thin, tabular crystals or scales; a high-temperature polymorph of quartz.

Tridymite

a mineral that is one of the crystalline polymorphs of SiO₂. Such trace elements as Fe, Al, and Na are commonly found in tridymite. It crystallizes in the form of colorless or gray tabular crystals, spherical aggregates, spear-shaped twins, and, often, trillings. It is a rare mineral and is usually encountered in cavities of juvenile extrusive acidic rocks and in tuffs; it is also found in meteorites and moon rocks. As a constituent of Dinas brick, tridymite determines the refractory properties of the brick.

tridymite

trid·y·mite

(trid'i-mīt), A form of silica used in dental casting investment. [fr. G. tridymos, threefold]

trid·y·mite

(trid'i-mīt) Form of silica used in dental casting investment. [fr. G. tridymos, threefold]

tridymite

Related to tridymite: cristobalite

noun

Words related to tridymite

noun a mineral form of silica

Related Words

mineral
silica
silicon dioxide
silicon oxide

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