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dihedron

[dahy-hee-druh n]
noun Geometry.
  1. a figure formed by two intersecting planes.
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Origin of dihedron

First recorded in 1820–30; di-1 + -hedron
Also called dihedral, dihedral angle.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for dihedron

dihedron

noun
  1. another name for dihedral (def. 2)
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012