"Tn" meaning in Translingual

{
  "coordinate_terms": [
    {
      "_dis1": "0 0",
      "alt": "actinon, radon-219",
      "word": "An"
    },
    {
      "_dis1": "0 0",
      "alt": "radon, radon-222",
      "word": "Rn"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "symbol"
      },
      "expansion": "Tn",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "symbol",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "mul",
          "name": "Chemistry",
          "orig": "mul:Chemistry",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "mul",
          "name": "Physics",
          "orig": "mul:Physics",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "74 26",
          "kind": "other",
          "name": "Translingual entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "thoron; ²²⁰₈₆Rn (radon-220); an isotope of radon"
      ],
      "id": "en-Tn-mul-symbol-KElRejV3",
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "physics",
          "physics"
        ],
        [
          "thoron",
          "thoron#English"
        ],
        [
          "radon",
          "radon#English"
        ]
      ],
      "raw_glosses": [
        "(chemistry, physics) thoron; ²²⁰₈₆Rn (radon-220); an isotope of radon"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    },
    {
      "categories": [],
      "glosses": [
        "Synonym of Rn (radon)"
      ],
      "id": "en-Tn-mul-symbol-9mQyoiDh",
      "links": [
        [
          "Rn",
          "Rn#Translingual"
        ]
      ],
      "raw_glosses": [
        "(obsolete) Synonym of Rn (radon)"
      ],
      "synonyms": [
        {
          "extra": "radon",
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "Rn"
        }
      ],
      "tags": [
        "obsolete"
      ]
    }
  ],
  "synonyms": [
    {
      "_dis1": "0 0",
      "tags": [
        "obsolete"
      ],
      "word": "To"
    }
  ],
  "word": "Tn"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English nouns with unknown or uncertain plurals",
    "English proper nouns",
    "English uncountable nouns",
    "English words without vowels",
    "Pages with 2 entries",
    "Translingual entries with incorrect language header",
    "Translingual lemmas",
    "Translingual symbols"
  ],
  "coordinate_terms": [
    {
      "alt": "actinon, radon-219",
      "word": "An"
    },
    {
      "alt": "radon, radon-222",
      "word": "Rn"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "symbol"
      },
      "expansion": "Tn",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "symbol",
  "senses": [
    {
      "categories": [
        "mul:Chemistry",
        "mul:Physics"
      ],
      "glosses": [
        "thoron; ²²⁰₈₆Rn (radon-220); an isotope of radon"
      ],
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "physics",
          "physics"
        ],
        [
          "thoron",
          "thoron#English"
        ],
        [
          "radon",
          "radon#English"
        ]
      ],
      "raw_glosses": [
        "(chemistry, physics) thoron; ²²⁰₈₆Rn (radon-220); an isotope of radon"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    },
    {
      "categories": [
        "Translingual terms with obsolete senses"
      ],
      "glosses": [
        "Synonym of Rn (radon)"
      ],
      "links": [
        [
          "Rn",
          "Rn#Translingual"
        ]
      ],
      "raw_glosses": [
        "(obsolete) Synonym of Rn (radon)"
      ],
      "synonyms": [
        {
          "extra": "radon",
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "Rn"
        }
      ],
      "tags": [
        "obsolete"
      ]
    }
  ],
  "synonyms": [
    {
      "tags": [
        "obsolete"
      ],
      "word": "To"
    }
  ],
  "word": "Tn"
}