"rotoinversion" meaning in English

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        "2": "roto",
        "3": "inversion"
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      "expansion": "roto- + inversion",
      "name": "prefix"
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  ],
  "etymology_text": "From roto- + inversion.",
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    {
      "form": "rotoinversions",
      "tags": [
        "plural"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "kind": "other",
          "name": "English entries with incorrect language header",
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          "name": "English terms prefixed with roto-",
          "parents": [],
          "source": "w"
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        {
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          "name": "Crystallography",
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          "name": "Mathematics",
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          "source": "w"
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      ],
      "examples": [
        {
          "text": "Coordinate term: rotoreflection"
        }
      ],
      "glosses": [
        "The combination of a rotation and an inversion in a point on the axis."
      ],
      "id": "en-rotoinversion-en-noun-vAI0mEBZ",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "crystallography",
          "crystallography"
        ],
        [
          "rotation",
          "rotation"
        ],
        [
          "inversion",
          "inversion"
        ],
        [
          "point",
          "point"
        ],
        [
          "axis",
          "axis"
        ]
      ],
      "raw_glosses": [
        "(mathematics, crystallography) The combination of a rotation and an inversion in a point on the axis."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "chemistry",
        "crystallography",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ],
      "wikipedia": [
        "Improper rotation"
      ]
    }
  ],
  "word": "rotoinversion"
}

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        "2": "roto",
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  ],
  "etymology_text": "From roto- + inversion.",
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        "plural"
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  "pos": "noun",
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      "examples": [
        {
          "text": "Coordinate term: rotoreflection"
        }
      ],
      "glosses": [
        "The combination of a rotation and an inversion in a point on the axis."
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
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          "crystallography",
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        ],
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        ],
        [
          "inversion",
          "inversion"
        ],
        [
          "point",
          "point"
        ],
        [
          "axis",
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      "raw_glosses": [
        "(mathematics, crystallography) The combination of a rotation and an inversion in a point on the axis."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
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        "chemistry",
        "crystallography",
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        "Improper rotation"
      ]
    }
  ],
  "word": "rotoinversion"
}