"trihedron" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "tri",
        "3": "hedron"
      },
      "expansion": "tri- + -hedron",
      "name": "confix"
    }
  ],
  "etymology_text": "tri- + -hedron",
  "forms": [
    {
      "form": "trihedrons",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "trihedra",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "s",
        "2": "trihedra"
      },
      "expansion": "trihedron (plural trihedrons or trihedra)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with tri-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -hedron",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Three",
          "orig": "en:Three",
          "parents": [
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A geometric figure composed of three planes meeting at a single vertex."
      ],
      "id": "en-trihedron-en-noun-6uPz3ut1",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "figure",
          "figure"
        ],
        [
          "plane",
          "plane"
        ],
        [
          "vertex",
          "vertex"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A geometric figure composed of three planes meeting at a single vertex."
      ],
      "related": [
        {
          "word": "trihedral"
        }
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "translations": [
        {
          "code": "eo",
          "lang": "Esperanto",
          "sense": "geometric figure",
          "word": "triedro"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "geometric figure",
          "tags": [
            "masculine"
          ],
          "word": "trièdre"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "geometric figure",
          "tags": [
            "masculine"
          ],
          "word": "Dreiflächner"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "geometric figure",
          "tags": [
            "neuter"
          ],
          "word": "Dreibein"
        },
        {
          "code": "io",
          "lang": "Ido",
          "sense": "geometric figure",
          "word": "triedro"
        },
        {
          "code": "it",
          "lang": "Italian",
          "sense": "geometric figure",
          "tags": [
            "masculine"
          ],
          "word": "triedro"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "geometric figure",
          "tags": [
            "masculine"
          ],
          "word": "trójścian"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "trjóxgrannik",
          "sense": "geometric figure",
          "tags": [
            "masculine"
          ],
          "word": "трёхгранник"
        },
        {
          "code": "tl",
          "lang": "Tagalog",
          "sense": "geometric figure",
          "word": "tatdayag"
        }
      ]
    }
  ],
  "sounds": [
    {
      "audio": "LL-Q1860 (eng)-Rho9998-trihedron.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/6/6b/LL-Q1860_%28eng%29-Rho9998-trihedron.wav/LL-Q1860_%28eng%29-Rho9998-trihedron.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/6/6b/LL-Q1860_%28eng%29-Rho9998-trihedron.wav/LL-Q1860_%28eng%29-Rho9998-trihedron.wav.ogg",
      "tags": [
        "UK"
      ],
      "text": "Audio (UK)"
    }
  ],
  "word": "trihedron"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "tri",
        "3": "hedron"
      },
      "expansion": "tri- + -hedron",
      "name": "confix"
    }
  ],
  "etymology_text": "tri- + -hedron",
  "forms": [
    {
      "form": "trihedrons",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "trihedra",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "s",
        "2": "trihedra"
      },
      "expansion": "trihedron (plural trihedrons or trihedra)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "trihedral"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English nouns",
        "English nouns with irregular plurals",
        "English terms prefixed with tri-",
        "English terms suffixed with -hedron",
        "English terms with audio links",
        "en:Mathematics",
        "en:Three"
      ],
      "glosses": [
        "A geometric figure composed of three planes meeting at a single vertex."
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "figure",
          "figure"
        ],
        [
          "plane",
          "plane"
        ],
        [
          "vertex",
          "vertex"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A geometric figure composed of three planes meeting at a single vertex."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "LL-Q1860 (eng)-Rho9998-trihedron.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/6/6b/LL-Q1860_%28eng%29-Rho9998-trihedron.wav/LL-Q1860_%28eng%29-Rho9998-trihedron.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/6/6b/LL-Q1860_%28eng%29-Rho9998-trihedron.wav/LL-Q1860_%28eng%29-Rho9998-trihedron.wav.ogg",
      "tags": [
        "UK"
      ],
      "text": "Audio (UK)"
    }
  ],
  "translations": [
    {
      "code": "eo",
      "lang": "Esperanto",
      "sense": "geometric figure",
      "word": "triedro"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "geometric figure",
      "tags": [
        "masculine"
      ],
      "word": "trièdre"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "geometric figure",
      "tags": [
        "masculine"
      ],
      "word": "Dreiflächner"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "geometric figure",
      "tags": [
        "neuter"
      ],
      "word": "Dreibein"
    },
    {
      "code": "io",
      "lang": "Ido",
      "sense": "geometric figure",
      "word": "triedro"
    },
    {
      "code": "it",
      "lang": "Italian",
      "sense": "geometric figure",
      "tags": [
        "masculine"
      ],
      "word": "triedro"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "geometric figure",
      "tags": [
        "masculine"
      ],
      "word": "trójścian"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "trjóxgrannik",
      "sense": "geometric figure",
      "tags": [
        "masculine"
      ],
      "word": "трёхгранник"
    },
    {
      "code": "tl",
      "lang": "Tagalog",
      "sense": "geometric figure",
      "word": "tatdayag"
    }
  ],
  "word": "trihedron"
}