trapezohedron
noun
tra·pe·zo·he·dron trə-ˌpē-zō-ˈhē-drən 
ˌtra-pə-
plural trapezohedrons or trapezohedra trə-ˌpē-zō-ˈhē-drə
ˌtra-pə-
: a crystalline form whose faces are trapeziums
Word History
Etymology
New Latin, from trapezium + -o- + -hedron
First Known Use
circa 1822, in the meaning defined above
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