prismatoid
pris·ma·toid [prÃzmÉ™ tòyd]
(plural pris·ma·toids)
noun
polyhedron: a polyhedron with all its vertices in one of two parallel planes
[Mid-19th century. < Greek prismat-, stem of prisma (see prism)]
-pris·ma·toi·dal [prìzmə tóyd'l], adjective
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