decahedron Syllabification: (dec·a·he·dron)Pronunciation: /ˌdekəˈhēdrən/Definition of decahedron noun (plural decahedrons or decahedra /-drə/) a solid figure with ten plane faces. Derivatives decahedralPronunciation: /-drəl/ adjective Origin: early 19th century: from deca- 'ten' + -hedron, on the pattern of words such as polyhedrondecahedron in other Oxford dictionaries Definition of decahedron in the British & World English dictionary
