decahedronPronunciation: /ˌdɛkəˈhiːdr(ə)n, -ˈhɛd-/Definition of decahedron noun (plural decahedra /-drə/ or decahedrons) a solid figure with ten plane faces. Derivatives decahedral 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 US English dictionary
