having, or formed by, three planes meeting in a point: a trihedral angle.
- sub·tri·he·dral, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use trihedral in a sentence
A triangle and a trihedral angle are therefore reciprocal figures.
The angle between two planes is termed dihedral, between three trihedral, between any number more than three polyhedral.
British Dictionary definitions for trihedral
having or formed by three plane faces meeting at a point
a figure formed by the intersection of three lines in different planes
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