Definitions

from The Century Dictionary.

  • noun In crystallography, a solid contained under twenty-four triangles; a tetrahexahedron (which see): so called because it is a frequent form in fluor-spar.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Crystallog.) A tetrahexahedron; -- so called because it is a common form of fluorite.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun crystallography A tetrahexahedron.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

fluor +‎ -oid. The shape is a common form of fluorite.

Examples

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