Plural of dodecahedron; three-dimensional geometric shapes bounded by twelve pentagonal or other polygonal faces.
Greek plural of 'dodecahedron,' from 'dodeca-' (twelve) and 'hedra' (face). This plural form is the standard in English scientific writing.
The dodecahedra is the most mysterious of Plato's five solids because its pentagonal faces never appear in nature—yet it shows up in quasicrystals and certain viral structures, baffling scientists for decades.
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