"ctg" meaning in All languages combined

{
  "categories": [
    {
      "kind": "other",
      "name": "有1個詞條的頁面",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "有詞條的頁面",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "跨語言符號",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "跨語言詞元",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "跨語言",
  "lang_code": "mul",
  "notes": [
    "在三角学中，ISO 80000-2:2019 明确弃用该符号，而使用 cot。"
  ],
  "pos": "symbol",
  "pos_title": "符號",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "ISO 639-3",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "(國際標準) ISO 639-3 語言代碼，表示吉大港語。"
      ],
      "id": "zh-ctg-mul-symbol-dzejOp3P"
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "跨語言 三角學",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "cotangent"
        }
      ],
      "glosses": [
        "餘切（cotangent之縮寫。）"
      ],
      "id": "zh-ctg-mul-symbol-EfNb2YSg",
      "tags": [
        "form-of"
      ],
      "topics": [
        "trigonometry"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "cot"
    },
    {
      "word": "cotan"
    },
    {
      "word": "cotg"
    },
    {
      "word": "ctn"
    }
  ],
  "word": "ctg"
}

{
  "categories": [
    "有1個詞條的頁面",
    "有詞條的頁面",
    "跨語言符號",
    "跨語言詞元"
  ],
  "lang": "跨語言",
  "lang_code": "mul",
  "notes": [
    "在三角学中，ISO 80000-2:2019 明确弃用该符号，而使用 cot。"
  ],
  "pos": "symbol",
  "pos_title": "符號",
  "senses": [
    {
      "categories": [
        "ISO 639-3"
      ],
      "glosses": [
        "(國際標準) ISO 639-3 語言代碼，表示吉大港語。"
      ]
    },
    {
      "categories": [
        "跨語言 三角學"
      ],
      "form_of": [
        {
          "word": "cotangent"
        }
      ],
      "glosses": [
        "餘切（cotangent之縮寫。）"
      ],
      "tags": [
        "form-of"
      ],
      "topics": [
        "trigonometry"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "cot"
    },
    {
      "word": "cotan"
    },
    {
      "word": "cotg"
    },
    {
      "word": "ctn"
    }
  ],
  "word": "ctg"
}