eicosaedrum (plural eicosaedrums)

  1. Obsolete form of icosahedron.
    • 1662, Henry More, An Antidote Against Atheism, Appendix, A Collection of Several Philosophical Writings of Dr. Henry More, p. 5189:
      "... That there are Five regular Bodies in Geometry, neither more nor less, viz., the Cube, the Tetraedrum, the Octaedrum, the Dodecaedrum and the Eicosaedrum ..."
Last modified on 31 August 2012, at 21:53