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decahedron

noun

deca·​he·​dron ˌde-kə-ˈhē-drən How to pronounce decahedron (audio)
plural decahedrons or decahedra ˌde-kə-ˈhē-drə How to pronounce decahedron (audio)
: a polyhedron of 10 faces

Word History

Etymology

International Scientific Vocabulary

First Known Use

circa 1828, in the meaning defined above

Time Traveler
The first known use of decahedron was circa 1828

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