parallelopipedonparallelopipedon means A parallelopiped. Lexicurio rates it Rare gem — a strength score of 82 out of 100.EtymologyFrom New Latin parallelopipedon, alteration of Ancient Greek παραλληλεπίπεδος (parallēlepípedos, “with parallel surfaces”), from παράλληλος (parállēlos, “parallel”) + ἐπίπεδος (epípedos, “plane”).nounA parallelopiped.“In the next place compare the rhombus with the parallelopipedon. It is evident the former is precisely half the area of the latter”