parallelopiped, parallelopiped on

[Lat. parallelepipedum, from Gr. par allele pipe don=a body with parallel surfaces, from parallelos parallel, and epipedon a flat surface, from epi = upon, and ped on the ground.] Geom.: A regular solid bounded by six plane surfaces, or parallelograms, the opposite pairs of which are similar, parallel, and equal to each other. If the parallelograms are squares, the solid is a cube. pár-al-lěl-ô-pi-pě-don, s . [PARALLELOPIPED.] păr-al-lěl-os-těr-ic, a . [Greck parallelos , and stereos solid.] (See compound.) parallelosteric-compounds, s. pl . Chem.: A term given by Scheerer to compounds analogous in composition, and exhibiting equal differences of atomic volume.