trihedralPronunciation: /trʌɪˈhiːdr(ə)l, -ˈhɛdr(ə)l/Definition of trihedral adjective (of a solid figure or body) having three sides or faces (in addition to the base or ends); triangular in cross section. noun a trihedral figure. Origin: late 18th century: from Greek tri- 'three' + hedra 'base' + -altrihedral in other Oxford dictionaries Definition of trihedral in the US English dictionary
