trihedral

[trahy-hee-druh l]
noun
  1. a trihedron.

Origin of trihedral

First recorded in 1780–90; tri- + -hedral
Related formssub·tri·he·dral, adjective
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Examples from the Web for trihedral

Historical Examples of trihedral


British Dictionary definitions for trihedral

trihedral

adjective
  1. having or formed by three plane faces meeting at a point
noun
  1. a figure formed by the intersection of three lines in different planes

Word Origin for trihedral

C18: from tri- + Greek hedra base, seat + -al 1
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