Wordnet 3.0
NOUN (1)
1.
the space enclosed by three or more planes that intersect in a vertex;
The Collaborative International Dictionary of English v.0.48:
Polyhedral \Pol`y*he"dral\, Polyhedrical \Pol`y*hed"ric*al\, a.
[See Polyhedron.] (Geom.)
Having many sides, as a solid body.
[1913 Webster]
Polyhedral angle, an angle bounded by three or more plane
angles having a common vertex.
[1913 Webster]
WordNet (r) 3.0 (2006):
polyhedral angle
n 1: the space enclosed by three or more planes that intersect
in a vertex