"nœud vital" meaning in French

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  "etymology_text": "Coined by Jean-Baptiste Lamarck in 1802.",
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    {
      "form": "nœuds vitals",
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  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
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          "langcode": "fr",
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          "orig": "fr:Anatomy",
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      "glosses": [
        "noeud vital"
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      "id": "en-nœud_vital-fr-noun-Zze~sDf5",
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  ],
  "word": "nœud vital"
}

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  ],
  "etymology_text": "Coined by Jean-Baptiste Lamarck in 1802.",
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    {
      "form": "nœuds vitals",
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        "plural"
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  ],
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    {
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  ],
  "lang": "French",
  "lang_code": "fr",
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  "word": "nœud vital"
}