Plural form of dodecahedron; three-dimensional solids, each bounded by twelve flat faces.
From Greek 'dodeca-' (twelve) and 'hedra' (face or side). The plural 'dodecaheddra' follows the Latin/Greek pattern of plural formation for geometric solids.
Plato associated the dodecahedron with the universe itself in his mystical geometry—later mathematicians proved it's one of only five perfect solids, connecting ancient philosophy to deeper mathematical truths.
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