"formal fallacy" meaning in English

{
  "forms": [
    {
      "form": "formal fallacies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "formal fallacy (plural formal fallacies)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "antonyms": [
        {
          "word": "informal fallacy"
        }
      ],
      "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"
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          "source": "w"
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          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
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          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Logic",
          "orig": "en:Logic",
          "parents": [
            "Formal sciences",
            "Philosophy",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Logical fallacies",
          "orig": "en:Logical fallacies",
          "parents": [
            "Logic",
            "Rhetoric",
            "Formal sciences",
            "Philosophy",
            "Language",
            "Sciences",
            "All topics",
            "Communication",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A pattern of reasoning which is always wrong, due to a flaw in the structure of the argument."
      ],
      "hyponyms": [
        {
          "word": "affirming a disjunct"
        },
        {
          "word": "affirming the consequent"
        },
        {
          "word": "appeal to probability"
        },
        {
          "word": "base rate fallacy"
        },
        {
          "word": "conjunction fallacy"
        },
        {
          "word": "denying the antecedent"
        },
        {
          "word": "exclusive premises"
        },
        {
          "word": "existential fallacy"
        },
        {
          "word": "fallacy of four terms"
        },
        {
          "word": "illicit affirmative"
        },
        {
          "word": "illicit major"
        },
        {
          "word": "illicit minor"
        },
        {
          "word": "illicit negative"
        },
        {
          "word": "masked-man fallacy"
        },
        {
          "word": "illicit substitution of identicals"
        },
        {
          "word": "modal fallacy"
        },
        {
          "word": "modal scope fallacy"
        },
        {
          "word": "undistributed middle"
        }
      ],
      "id": "en-formal_fallacy-en-noun-uHayvax~",
      "links": [
        [
          "logic",
          "logic"
        ]
      ],
      "raw_glosses": [
        "(logic) A pattern of reasoning which is always wrong, due to a flaw in the structure of the argument."
      ],
      "topics": [
        "human-sciences",
        "logic",
        "mathematics",
        "philosophy",
        "sciences"
      ],
      "wikipedia": [
        "formal fallacy"
      ]
    }
  ],
  "word": "formal fallacy"
}

{
  "forms": [
    {
      "form": "formal fallacies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "formal fallacy (plural formal fallacies)",
      "name": "en-noun"
    }
  ],
  "hyponyms": [
    {
      "word": "affirming a disjunct"
    },
    {
      "word": "affirming the consequent"
    },
    {
      "word": "appeal to probability"
    },
    {
      "word": "base rate fallacy"
    },
    {
      "word": "conjunction fallacy"
    },
    {
      "word": "denying the antecedent"
    },
    {
      "word": "exclusive premises"
    },
    {
      "word": "existential fallacy"
    },
    {
      "word": "fallacy of four terms"
    },
    {
      "word": "illicit affirmative"
    },
    {
      "word": "illicit major"
    },
    {
      "word": "illicit minor"
    },
    {
      "word": "illicit negative"
    },
    {
      "word": "masked-man fallacy"
    },
    {
      "word": "illicit substitution of identicals"
    },
    {
      "word": "modal fallacy"
    },
    {
      "word": "modal scope fallacy"
    },
    {
      "word": "undistributed middle"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "antonyms": [
        {
          "word": "informal fallacy"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "en:Logic",
        "en:Logical fallacies"
      ],
      "glosses": [
        "A pattern of reasoning which is always wrong, due to a flaw in the structure of the argument."
      ],
      "links": [
        [
          "logic",
          "logic"
        ]
      ],
      "raw_glosses": [
        "(logic) A pattern of reasoning which is always wrong, due to a flaw in the structure of the argument."
      ],
      "topics": [
        "human-sciences",
        "logic",
        "mathematics",
        "philosophy",
        "sciences"
      ],
      "wikipedia": [
        "formal fallacy"
      ]
    }
  ],
  "word": "formal fallacy"
}