"ionium" meaning in Français

{
  "categories": [
    {
      "kind": "other",
      "name": "Lemmes en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms indénombrables en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Um prononcés /ɔm/ en français",
      "orig": "um prononcés /ɔm/ en français",
      "parents": [],
      "source": "w"
    }
  ],
  "hypernyms": [
    {
      "raw_tags": [
        "Th"
      ],
      "word": "thorium"
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en français de la chimie",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Termes désuets en français",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Ancienne désignation du thorium-230 (²³⁰Th), symbole Io."
      ],
      "id": "fr-ionium-fr-noun-mpsIVLQ6",
      "tags": [
        "obsolete"
      ],
      "topics": [
        "chemistry"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\jɔ.njɔm\\"
    }
  ],
  "tags": [
    "masculine",
    "singular",
    "uncountable"
  ],
  "word": "ionium"
}

{
  "categories": [
    "Lemmes en français",
    "Noms communs en français",
    "Noms indénombrables en français",
    "français",
    "um prononcés /ɔm/ en français"
  ],
  "hypernyms": [
    {
      "raw_tags": [
        "Th"
      ],
      "word": "thorium"
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        "Lexique en français de la chimie",
        "Termes désuets en français"
      ],
      "glosses": [
        "Ancienne désignation du thorium-230 (²³⁰Th), symbole Io."
      ],
      "tags": [
        "obsolete"
      ],
      "topics": [
        "chemistry"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\jɔ.njɔm\\"
    }
  ],
  "tags": [
    "masculine",
    "singular",
    "uncountable"
  ],
  "word": "ionium"
}