trisoctahedron

noun
tris·​oc·​ta·​he·​dron | \ ˌtri-ˌsäk-tə-ˈhē-drən How to pronounce trisoctahedron (audio) \

Definition of trisoctahedron

: a solid (such as a crystal) having 24 congruent faces meeting on the edges of a regular octahedron

First Known Use of trisoctahedron

circa 1847, in the meaning defined above

History and Etymology for trisoctahedron

Greek tris thrice + English octahedron — more at ter-

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The first known use of trisoctahedron was circa 1847

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