"ua" meaning in Translingual

{
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "symbol"
      },
      "expansion": "ua",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "symbol",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Translingual entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "_dis": "4 0 0 0 8 3 2 0 0 1 0 1 0 0 0 5 1 8 0 2 4 4 0 17 5 0 0 0 0 3 4 4 14 4 5 0 0 1 0",
          "kind": "other",
          "name": "White Hmong entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "BIPM recommendation for the unit symbol of astronomical unit"
      ],
      "id": "en-ua-mul-symbol-ssWWCzcH",
      "links": [
        [
          "BIPM",
          "BIPM#English"
        ],
        [
          "unit symbol",
          "unit symbol#English"
        ],
        [
          "astronomical unit",
          "astronomical unit#English"
        ]
      ],
      "synonyms": [
        {
          "english": "IAU recommendation for the unit symbol of astronomical units",
          "word": "au"
        },
        {
          "english": "Unicode glyph for astronomical unit",
          "word": "㍳"
        }
      ]
    }
  ],
  "word": "ua"
}

{
  "categories": [
    "White Hmong entries with incorrect language header",
    "White Hmong lemmas",
    "White Hmong terms derived from Proto-Hmong-Mien",
    "White Hmong terms inherited from Proto-Hmong-Mien",
    "White Hmong terms with IPA pronunciation",
    "White Hmong verbs"
  ],
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "symbol"
      },
      "expansion": "ua",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "symbol",
  "senses": [
    {
      "categories": [
        "Translingual entries with incorrect language header",
        "Translingual lemmas",
        "Translingual symbols"
      ],
      "glosses": [
        "BIPM recommendation for the unit symbol of astronomical unit"
      ],
      "links": [
        [
          "BIPM",
          "BIPM#English"
        ],
        [
          "unit symbol",
          "unit symbol#English"
        ],
        [
          "astronomical unit",
          "astronomical unit#English"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "english": "IAU recommendation for the unit symbol of astronomical units",
      "word": "au"
    },
    {
      "english": "Unicode glyph for astronomical unit",
      "word": "㍳"
    }
  ],
  "word": "ua"
}