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2 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

 Tri·e·dral a. See Trihedral.
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From: Webster's Revised Unabridged Dictionary (1913)

 Tri·he·dral a.  Geom. Having three sides or faces; thus, a trihedral angle is a solid angle bounded by three plane angles. [Written also triedral.]
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