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Dictionary

tet•ra•he•dron

Pronunciation: (te"tru-hē'drun), [key]
—n.,
—pl. -drons, -draPronunciation: (-dru). [key]
1. Geom.a solid contained by four plane faces; a triangular pyramid.
2. any of various objects resembling a tetrahedron in the distribution of its faces or apexes.

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

tetrahedrite

tetrahydrate

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