Eicosaedrum
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 Obsolete form of icosahedron. alt-of, obsolete
"[…] That there are Five regular Bodies in Geometry, neither more nor less, viz., the Cube, the Tetraedrum, the Octaedrum, the Dodecaedrum and the Eicosaedrum […]"
Example
More examples"[…] That there are Five regular Bodies in Geometry, neither more nor less, viz., the Cube, the Tetraedrum, the Octaedrum, the Dodecaedrum and the Eicosaedrum […]"
Etymology
From εἴκοσι (eíkosi) (twenty) + ἕδρα (hédra) (seat, base).
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.