"indu" meaning in Lingala

{
  "categories": [
    {
      "kind": "other",
      "name": "Noms communs en lingala",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lingala",
      "orig": "lingala",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Lingala",
  "lang_code": "ln",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Métaux en lingala",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en lingala",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Éléments chimiques en lingala",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Indium."
      ],
      "id": "fr-indu-ln-noun-SGD1yD-S",
      "topics": [
        "chemistry",
        "metallurgy"
      ]
    }
  ],
  "word": "indu"
}

{
  "categories": [
    "Noms communs en lingala",
    "lingala"
  ],
  "lang": "Lingala",
  "lang_code": "ln",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        "Métaux en lingala",
        "Wiktionnaire:Exemples manquants en lingala",
        "Éléments chimiques en lingala"
      ],
      "glosses": [
        "Indium."
      ],
      "topics": [
        "chemistry",
        "metallurgy"
      ]
    }
  ],
  "word": "indu"
}