"Hankel function" meaning in English

{
  "forms": [
    {
      "form": "Hankel functions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Hankel function (plural Hankel functions)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "name": "English entries with incorrect language header",
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            "Entries with incorrect language header",
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Functions",
          "orig": "en:Functions",
          "parents": [
            "Algebra",
            "Calculus",
            "Geometry",
            "Mathematical analysis",
            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Either of two functions that are solutions to Bessel's equation."
      ],
      "hypernyms": [
        {
          "word": "function"
        }
      ],
      "hyponyms": [
        {
          "word": "Hankel functions of the first kind"
        },
        {
          "word": "Hankel functions of the second kind"
        },
        {
          "word": "modified Hankel function"
        }
      ],
      "id": "en-Hankel_function-en-noun-sMBkc~7d",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "function",
          "function"
        ],
        [
          "Bessel's equation",
          "Bessel's equation"
        ]
      ],
      "raw_glosses": [
        "(mathematics) Either of two functions that are solutions to Bessel's equation."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "function",
          "word": "汉克尔函数"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "function",
          "tags": [
            "feminine"
          ],
          "word": "Hankel-Funktion"
        },
        {
          "code": "id",
          "lang": "Indonesian",
          "sense": "function",
          "word": "fungsi Hankel"
        },
        {
          "code": "tr",
          "lang": "Turkish",
          "sense": "function",
          "word": "Hankel fonksiyonu"
        }
      ]
    }
  ],
  "word": "Hankel function"
}

{
  "forms": [
    {
      "form": "Hankel functions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Hankel function (plural Hankel functions)",
      "name": "en-noun"
    }
  ],
  "hypernyms": [
    {
      "word": "function"
    }
  ],
  "hyponyms": [
    {
      "word": "Hankel functions of the first kind"
    },
    {
      "word": "Hankel functions of the second kind"
    },
    {
      "word": "modified Hankel function"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English countable nouns",
        "English entries with incorrect language header",
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        "English entries with topic categories using raw markup",
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        "en:Mathematics"
      ],
      "glosses": [
        "Either of two functions that are solutions to Bessel's equation."
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "function",
          "function"
        ],
        [
          "Bessel's equation",
          "Bessel's equation"
        ]
      ],
      "raw_glosses": [
        "(mathematics) Either of two functions that are solutions to Bessel's equation."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "function",
      "word": "汉克尔函数"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "function",
      "tags": [
        "feminine"
      ],
      "word": "Hankel-Funktion"
    },
    {
      "code": "id",
      "lang": "Indonesian",
      "sense": "function",
      "word": "fungsi Hankel"
    },
    {
      "code": "tr",
      "lang": "Turkish",
      "sense": "function",
      "word": "Hankel fonksiyonu"
    }
  ],
  "word": "Hankel function"
}