parallelepiped

noun
par·al·lel·e·pi·ped | \ ˌper-ə-ˌle-lə-ˈpī-pəd , ˌpa-rə- also -ˌle-ˈle-pə-ˌped \

Definition of parallelepiped 

: a 6-faced polyhedron all of whose faces are parallelograms lying in pairs of parallel planes

First Known Use of parallelepiped

1570, in the meaning defined above

History and Etymology for parallelepiped

Greek parallēlepipedon, from parallēlos + epipedon plane surface, from neuter of epipedos flat, from epi- epi- + pedon ground; akin to Latin ped-, pes foot — more at foot

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The first known use of parallelepiped was in 1570

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