trihedronPronunciation: /trʌɪˈhiːdrən, -ˈhɛdrən/Definition of trihedron noun (plural trihedra /-drə/ or trihedrons) a solid figure having three sides or faces (in addition to the base or ends). Origin: early 19th century: from tri- 'three' + -hedron, on the pattern of words such as polyhedrontrihedron in other Oxford dictionaries Definition of trihedron in the US English dictionary
