"Schönhardt polyhedron" meaning in English

{
  "etymology_text": "Named after German mathematician Erich Schönhardt, who described it in 1928.",
  "forms": [
    {
      "form": "Schönhardt polyhedra",
      "tags": [
        "plural"
      ]
    }
  ],
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      "expansion": "Schönhardt polyhedron (plural Schönhardt polyhedra)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Polyhedra",
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      ],
      "glosses": [
        "The simplest non-convex polyhedron that cannot be triangulated into tetrahedra without adding new vertices."
      ],
      "id": "en-Schönhardt_polyhedron-en-noun-3HvxqdMp",
      "links": [
        [
          "geometry",
          "geometry"
        ],
        [
          "convex",
          "convex"
        ],
        [
          "polyhedron",
          "polyhedron"
        ],
        [
          "triangulate",
          "triangulate"
        ],
        [
          "tetrahedra",
          "tetrahedron"
        ],
        [
          "vertices",
          "vertex"
        ]
      ],
      "raw_glosses": [
        "(geometry) The simplest non-convex polyhedron that cannot be triangulated into tetrahedra without adding new vertices."
      ],
      "topics": [
        "geometry",
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "Schönhardt polyhedron"
}

{
  "etymology_text": "Named after German mathematician Erich Schönhardt, who described it in 1928.",
  "forms": [
    {
      "form": "Schönhardt polyhedra",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "The simplest non-convex polyhedron that cannot be triangulated into tetrahedra without adding new vertices."
      ],
      "links": [
        [
          "geometry",
          "geometry"
        ],
        [
          "convex",
          "convex"
        ],
        [
          "polyhedron",
          "polyhedron"
        ],
        [
          "triangulate",
          "triangulate"
        ],
        [
          "tetrahedra",
          "tetrahedron"
        ],
        [
          "vertices",
          "vertex"
        ]
      ],
      "raw_glosses": [
        "(geometry) The simplest non-convex polyhedron that cannot be triangulated into tetrahedra without adding new vertices."
      ],
      "topics": [
        "geometry",
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "Schönhardt polyhedron"
}