"BT" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Noms propres en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Sigles en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "(Sigle) Sigle."
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "name",
  "pos_title": "Nom propre",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en anglais des télécommunications",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Sigle de British Telecom, le système principal des télécommunications au Royaume-Uni."
      ],
      "id": "fr-BT-en-name-lGQ1ipA7",
      "topics": [
        "telecommunications"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\bi.ti\\"
    }
  ],
  "tags": [
    "invariable"
  ],
  "word": "BT"
}

{
  "categories": [
    "Noms propres en anglais",
    "Sigles en anglais",
    "anglais"
  ],
  "etymology_texts": [
    "(Sigle) Sigle."
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "name",
  "pos_title": "Nom propre",
  "senses": [
    {
      "categories": [
        "Lexique en anglais des télécommunications"
      ],
      "glosses": [
        "Sigle de British Telecom, le système principal des télécommunications au Royaume-Uni."
      ],
      "topics": [
        "telecommunications"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\bi.ti\\"
    }
  ],
  "tags": [
    "invariable"
  ],
  "word": "BT"
}