"CQD" meaning in Translingual

{
  "etymology_templates": [
    {
      "args": {
        "1": "calling all quarters, distress"
      },
      "expansion": "(calling all quarters, distress)",
      "name": "gloss"
    }
  ],
  "etymology_text": "From the Morse code – · – · – – · – – · · (calling all quarters, distress).",
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "symbol"
      },
      "expansion": "CQD",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "symbol",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 3 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Translingual entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "SOS, general distress call"
      ],
      "hyponyms": [
        {
          "word": "mayday"
        },
        {
          "word": "pan-pan"
        }
      ],
      "id": "en-CQD-mul-symbol-mxg7jPYF",
      "links": [
        [
          "SOS",
          "SOS"
        ],
        [
          "distress call",
          "distress call"
        ]
      ],
      "related": [
        {
          "english": "Morse code for call all quarters/stations",
          "word": "CQ"
        }
      ],
      "synonyms": [
        {
          "word": "SOS"
        }
      ],
      "wikipedia": [
        "CQD"
      ]
    }
  ],
  "word": "CQD"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "calling all quarters, distress"
      },
      "expansion": "(calling all quarters, distress)",
      "name": "gloss"
    }
  ],
  "etymology_text": "From the Morse code – · – · – – · – – · · (calling all quarters, distress).",
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "symbol"
      },
      "expansion": "CQD",
      "name": "head"
    }
  ],
  "hyponyms": [
    {
      "word": "mayday"
    },
    {
      "word": "pan-pan"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "symbol",
  "related": [
    {
      "english": "Morse code for call all quarters/stations",
      "word": "CQ"
    }
  ],
  "senses": [
    {
      "categories": [
        "Pages with 3 entries",
        "Pages with entries",
        "Translingual entries with incorrect language header",
        "Translingual lemmas",
        "Translingual symbols"
      ],
      "glosses": [
        "SOS, general distress call"
      ],
      "links": [
        [
          "SOS",
          "SOS"
        ],
        [
          "distress call",
          "distress call"
        ]
      ],
      "wikipedia": [
        "CQD"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "SOS"
    }
  ],
  "word": "CQD"
}