"countertheorem" meaning in English

{
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    {
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        "1": "en",
        "2": "counter",
        "3": "theorem"
      },
      "expansion": "counter- + theorem",
      "name": "prefix"
    }
  ],
  "etymology_text": "From counter- + theorem.",
  "forms": [
    {
      "form": "countertheorems",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "countertheorem (plural countertheorems)",
      "name": "en-noun"
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  "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"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with counter-",
          "parents": [],
          "source": "w"
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        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
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          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
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      "examples": [
        {
          "ref": "1960, James Marvin Weller, Stratigraphic Principles and Practice, page 480:",
          "text": "William Smith's demonstration that similar fossils identify the same formation at different places induced the countertheorem that different fossils indicate formations of different ages.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A theorem formulated in opposition to another."
      ],
      "id": "en-countertheorem-en-noun-mo28Hmq1",
      "links": [
        [
          "theorem",
          "theorem"
        ]
      ]
    }
  ],
  "word": "countertheorem"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "counter",
        "3": "theorem"
      },
      "expansion": "counter- + theorem",
      "name": "prefix"
    }
  ],
  "etymology_text": "From counter- + theorem.",
  "forms": [
    {
      "form": "countertheorems",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "countertheorem (plural countertheorems)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
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        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms prefixed with counter-",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1960, James Marvin Weller, Stratigraphic Principles and Practice, page 480:",
          "text": "William Smith's demonstration that similar fossils identify the same formation at different places induced the countertheorem that different fossils indicate formations of different ages.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A theorem formulated in opposition to another."
      ],
      "links": [
        [
          "theorem",
          "theorem"
        ]
      ]
    }
  ],
  "word": "countertheorem"
}