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trapezohedron

Trapezohedron is a 13 letter word which starts with the letter T and ends with the letter N for which we found 2 definitions.

Definition
(n.) A solid bounded by twenty-four equal and similar trapeziums; a tetragonal trisoctahedron. See the Note under Trisoctahedron.
(n.) A tetartohedral solid of the hexagonal system bounded by six trapezoidal planes. The faces of this form are common on quartz crystals.
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