trimorph

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tri·morph

(trī′môrf′)

1. A substance that occurs in three distinct crystalline forms.

2. One of the crystalline forms in which a trimorphic substance occurs.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

trimorph

(ˈtraɪmɔːf)

1. (Geological Science) a substance, esp a mineral, that exists in three distinct forms

2. (Geological Science) any of the forms in which such a structure exists

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

tri•morph

(ˈtraɪ mɔrf)

n.

a substance existing in three structurally distinct forms; a trimorphous substance.

[1905–10; < Greek trímorphos having three forms. See tri-, -morph]

References in periodicals archive ?

Groutite, an orthorhombic trimorph of (monoclinic) manganite and feitknechtite, is a rare species known in good specimens chiefly from the Iron Range of Minnesota (in 1980 some superb specimens were collected in the Roberts mine, Cayuna Range, Crow Wing County).

Ilfeld Harz Mountains: Thuringia, Germany

The yellow patina (already mentioned) is lepidocrocite, chemically identical with goethite, its trimorph. As measured by SEM imaging, the patina consists of a uniform, 1.6-[mu]m-thick layer of lepidocrocite (very unlikely to have been applied artificially) upon calcite (Fig.

"Skunk" calcite: mineral paragenesis in an amethyst geode from Ametista, Rio Grande do Sul, Brazil

Brookite, the orthorhombic trimorph of [TiO.sub.2], occurs in fine, doubly terminated, deep reddish brown crystals in chert cutting Hale Creek, Trinity County, California.

BROOKITE FROM HALE CREEK, TRINITY COUNTY, CALIFORNIA

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