"biaffine" meaning in English

{
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        "2": "bi",
        "3": "affine"
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      "expansion": "bi- + affine",
      "name": "prefix"
    }
  ],
  "etymology_text": "From bi- + affine.",
  "head_templates": [
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      "args": {
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      "expansion": "biaffine (not comparable)",
      "name": "en-adj"
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
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            "Entries with incorrect language header",
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          "parents": [],
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        {
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          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
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            "Fundamental"
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      "examples": [
        {
          "ref": "2015, Štefan Gyürki, Mikhail Klin, “Construction of infinite families of non-Schurian association schemes of order 2p², p an odd prime, based on biaffine planes and Heisenberg groups: research report and beyond”, in arXiv:",
          "text": "This construction is explained using incidences between points and lines of a biaffine plane and we also provide a pure algebraic model for it with the aid of finite Heisenberg groups.",
          "type": "quote"
        }
      ],
      "glosses": [
        "affine in two different ways"
      ],
      "id": "en-biaffine-en-adj-KVIEuYMp",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "affine",
          "affine"
        ]
      ],
      "raw_glosses": [
        "(mathematics) affine in two different ways"
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "biaffine"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "bi",
        "3": "affine"
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      "expansion": "bi- + affine",
      "name": "prefix"
    }
  ],
  "etymology_text": "From bi- + affine.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "biaffine (not comparable)",
      "name": "en-adj"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
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      "examples": [
        {
          "ref": "2015, Štefan Gyürki, Mikhail Klin, “Construction of infinite families of non-Schurian association schemes of order 2p², p an odd prime, based on biaffine planes and Heisenberg groups: research report and beyond”, in arXiv:",
          "text": "This construction is explained using incidences between points and lines of a biaffine plane and we also provide a pure algebraic model for it with the aid of finite Heisenberg groups.",
          "type": "quote"
        }
      ],
      "glosses": [
        "affine in two different ways"
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
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        [
          "affine",
          "affine"
        ]
      ],
      "raw_glosses": [
        "(mathematics) affine in two different ways"
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
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  "word": "biaffine"
}