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Dictionary

te•trag•o•nal

Pronunciation: (te-trag'u-nl), [key]
—adj.
1. pertaining to or having the form of a tetragon.
2. Crystall.noting or pertaining to a system of crystallization in which all three axes are at right angles to one another, two being equal in length and the third being of a different length. Cf. crystal system.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

tetragon

tetragonal trisoctahedron

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