deltohedron

noun
del·to·he·dron | \-ˈhēdrən\
plural deltohedra\-drə \

Definition of deltohedron 

: a solid (such as a crystal) that is bounded by 12 quadrilateral faces and is a hemihedral form of the isometric system related to the tetrahedron

called also deltoid dodecahedron, tetragonal tristetrahedron

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History and Etymology for deltohedron

New Latin, from delto- + -hedron

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