trihedron

trihedron

[trahy-hee-druhn]
noun, plural trihedrons, trihedra [trahy-hee-druh] . Geometry.
the figure determined by three planes meeting in a point.
Also, trihedral.


Origin:
1820–30; tri- + -hedron

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World English Dictionary
trihedron (traɪˈhiːdrən)
 
n , pl -drons, -dra
a figure determined by the intersection of three planes

Collins English Dictionary - Complete & Unabridged 10th Edition
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