decahedron

noun
deca·​he·​dron | \ˌde-kə-ˈhē-drən \
plural decahedrons or decahedra\ -​drə \

Definition of decahedron 

: a polyhedron of 10 faces

First Known Use of decahedron

circa 1828, in the meaning defined above

History and Etymology for decahedron

International Scientific Vocabulary

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The first known use of decahedron was circa 1828

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