"tanh" meaning in Translingual

{
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "symbol"
      },
      "expansion": "tanh",
      "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"
        },
        {
          "kind": "topical",
          "langcode": "mul",
          "name": "Trigonometry",
          "orig": "mul:Trigonometry",
          "parents": [
            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The hyperbolic function hyperbolic tangent."
      ],
      "id": "en-tanh-mul-symbol-Lfv-Ai4W",
      "links": [
        [
          "trigonometry",
          "trigonometry"
        ],
        [
          "hyperbolic function",
          "hyperbolic function"
        ],
        [
          "hyperbolic tangent",
          "hyperbolic tangent"
        ]
      ],
      "raw_glosses": [
        "(trigonometry) The hyperbolic function hyperbolic tangent."
      ],
      "related": [
        {
          "word": "cosh"
        },
        {
          "word": "sinh"
        },
        {
          "word": "tan"
        }
      ],
      "topics": [
        "mathematics",
        "sciences",
        "trigonometry"
      ]
    }
  ],
  "sounds": [],
  "word": "tanh"
}

{
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "symbol"
      },
      "expansion": "tanh",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "symbol",
  "related": [
    {
      "word": "cosh"
    },
    {
      "word": "sinh"
    },
    {
      "word": "tan"
    }
  ],
  "senses": [
    {
      "categories": [
        "English 1-syllable words",
        "English 2-syllable words",
        "English terms with IPA pronunciation",
        "Translingual entries with incorrect language header",
        "Translingual lemmas",
        "Translingual symbols",
        "mul:Trigonometry"
      ],
      "glosses": [
        "The hyperbolic function hyperbolic tangent."
      ],
      "links": [
        [
          "trigonometry",
          "trigonometry"
        ],
        [
          "hyperbolic function",
          "hyperbolic function"
        ],
        [
          "hyperbolic tangent",
          "hyperbolic tangent"
        ]
      ],
      "raw_glosses": [
        "(trigonometry) The hyperbolic function hyperbolic tangent."
      ],
      "topics": [
        "mathematics",
        "sciences",
        "trigonometry"
      ]
    }
  ],
  "sounds": [],
  "word": "tanh"
}