Meaning of DIHEDRAL in English
adj. & n.
adj. having or contained by two plane faces.
n. = dihedral angle. dihedral angle an angle formed by two plane surfaces, esp. by an aircraft wing with the horizontal.
[ dihedron f. DI-(1) + -HEDRON ]
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012