parallelepipedaladj.
/ˌparəlɛləˈpʌɪpᵻdl/, /ˌparəlɛlᵻˈpɪpᵻdl/, U.S. /ˈˌpɛrəˌlɛləˈpaɪpᵻd(ə)l/, /ˈˌpɛrəˌlɛləˈpɪpᵻd(ə)l/ Geometry.
Having the form of a parallelepiped.
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the world > relative properties > number > geometry > shape or figure > [adjective] > three-dimensional > prismatical or prismoidal > parallelepipedal
parallelepipedal1732
parallelepipedous1826
parallelepipedonal1890
1732 tr. H. Boerhaave Elements Chymistry I. 16 These three [salts] are of one and the same nature, for they..give like crystals, sc. cubical, parallelopipedal or pyramidal.
1794 R. J. Sulivan View of Nature I. 438 Cubic..or parallelepipedal forms.
1852 T. Ross tr. A. von Humboldt Personal Narr. Trav. Amer. I. xi. 368 Breaking into fragments of a parallelopipedal figure.
1889 Proc. Royal Soc. 1888–9 45 275 The effect of the polarisation produced in a parallelipipedal element of dielectric.
1950 L. R. Underwood Rolling of Metals I. iv. 83 If a rectangular network of lines on the bar before rolling is still rectangular after rolling, then the total deformation may be regarded as parallelopipedal.
1991 Fertilizer Internat. (Nexis) Sept. 56 Other recyclable packaging is rigid (metal, plastic, and so on), and is better suited for the transport of dangerous solids. Most often, they are of parallelepipedal shape.
This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022).
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adj.1732