"trihedron" meaning in English

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  "etymology_text": "From tri- + -hedron.",
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      "form": "trihedrons",
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      "form": "trihedra",
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        "plural"
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        "A geometric figure composed of three planes meeting at a single vertex."
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          "figure",
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          "plane",
          "plane"
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          "vertex",
          "vertex"
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        "(mathematics) A geometric figure composed of three planes meeting at a single vertex."
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        {
          "word": "trihedral"
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        "mathematics",
        "sciences"
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        {
          "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"
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          "code": "de",
          "lang": "German",
          "sense": "geometric figure",
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            "neuter"
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          "word": "Dreibein"
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          "sense": "geometric figure",
          "word": "triedro"
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          "sense": "geometric figure",
          "tags": [
            "masculine"
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          "word": "triedro"
        },
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          "code": "pl",
          "lang": "Polish",
          "sense": "geometric figure",
          "tags": [
            "masculine"
          ],
          "word": "trójścian"
        },
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          "code": "ru",
          "lang": "Russian",
          "roman": "trjóxgrannik",
          "sense": "geometric figure",
          "tags": [
            "masculine"
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          "word": "трёхгранник"
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          "sense": "geometric figure",
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    {
      "code": "eo",
      "lang": "Esperanto",
      "sense": "geometric figure",
      "word": "triedro"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "geometric figure",
      "tags": [
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      "word": "trièdre"
    },
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      "sense": "geometric figure",
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        "masculine"
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      "word": "Dreiflächner"
    },
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      "code": "de",
      "lang": "German",
      "sense": "geometric figure",
      "tags": [
        "neuter"
      ],
      "word": "Dreibein"
    },
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      "code": "io",
      "lang": "Ido",
      "sense": "geometric figure",
      "word": "triedro"
    },
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      "sense": "geometric figure",
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      "sense": "geometric figure",
      "tags": [
        "masculine"
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    },
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      "code": "tl",
      "lang": "Tagalog",
      "sense": "geometric figure",
      "word": "tatdayag"
    }
  ],
  "word": "trihedron"
}