"argonului" meaning in Roumain

{
  "categories": [
    {
      "kind": "other",
      "name": "Formes de noms communs en roumain",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Roumain",
      "orig": "roumain",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Roumain",
  "lang_code": "ro",
  "pos": "noun",
  "pos_title": "Forme de nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Cas datifs en roumain",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Cas génitifs en roumain",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "argon"
        }
      ],
      "glosses": [
        "Cas datif et génitif articulé singulier de argon."
      ],
      "id": "fr-argonului-ro-noun-la~iA8P4"
    }
  ],
  "tags": [
    "form-of",
    "masculine",
    "singular"
  ],
  "word": "argonului"
}

{
  "categories": [
    "Formes de noms communs en roumain",
    "roumain"
  ],
  "lang": "Roumain",
  "lang_code": "ro",
  "pos": "noun",
  "pos_title": "Forme de nom commun",
  "senses": [
    {
      "categories": [
        "Cas datifs en roumain",
        "Cas génitifs en roumain"
      ],
      "form_of": [
        {
          "word": "argon"
        }
      ],
      "glosses": [
        "Cas datif et génitif articulé singulier de argon."
      ]
    }
  ],
  "tags": [
    "form-of",
    "masculine",
    "singular"
  ],
  "word": "argonului"
}