Eicosaedrum

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 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).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.