decahedron
noun/ˌdekəˈhiːdrən/
/ˌdekəˈhiːdrən/
(geometry)- a solid shape with ten flat sides compare decagonTopics Colours and Shapesc2Word Originearly 19th cent.: from deca- ‘ten’ + -hedron, on the pattern of words such as polyhedron.
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decahedron