tetrahexahedron

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tetrahexahedron

[‚te·trə′hek·sə‚drän]
(crystallography)
A form of regular crystal system with four triangular isosceles faces on each side of a cube; there are altogether 24 congruent faces.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.