"算学" meaning in Japanese

{
  "forms": [
    {
      "form": "算学",
      "ruby": [
        [
          "算",
          "さん"
        ],
        [
          "学",
          "がく"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "sangaku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "さんがく",
      "roman": "sangaku",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "さんがく",
        "hhira": "さんがく"
      },
      "expansion": "算(さん)学(がく) • (sangaku) ^(←さんがく (sangaku)?)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with 2 kanji",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "ja",
          "name": "Mathematics",
          "orig": "ja:Mathematics",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "mathematics"
      ],
      "id": "en-算学-ja-noun-yQ4Jfkbb",
      "links": [
        [
          "mathematics",
          "mathematics"
        ]
      ],
      "raw_glosses": [
        "(historical) mathematics"
      ],
      "synonyms": [
        {
          "word": "数学"
        }
      ],
      "tags": [
        "historical"
      ]
    }
  ],
  "sounds": [
    {
      "other": "さんがく"
    },
    {
      "ipa": "[sã̠ŋɡa̠kɯ̟]"
    }
  ],
  "word": "算学"
}

{
  "forms": [
    {
      "form": "算学",
      "ruby": [
        [
          "算",
          "さん"
        ],
        [
          "学",
          "がく"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "sangaku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "さんがく",
      "roman": "sangaku",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "さんがく",
        "hhira": "さんがく"
      },
      "expansion": "算(さん)学(がく) • (sangaku) ^(←さんがく (sangaku)?)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese nouns",
        "Japanese terms spelled with first grade kanji",
        "Japanese terms spelled with second grade kanji",
        "Japanese terms with 2 kanji",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with historical senses",
        "Japanese terms with redundant sortkeys",
        "Pages with 2 entries",
        "Pages with entries",
        "ja:Mathematics"
      ],
      "glosses": [
        "mathematics"
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ]
      ],
      "raw_glosses": [
        "(historical) mathematics"
      ],
      "synonyms": [
        {
          "word": "数学"
        }
      ],
      "tags": [
        "historical"
      ]
    }
  ],
  "sounds": [
    {
      "other": "さんがく"
    },
    {
      "ipa": "[sã̠ŋɡa̠kɯ̟]"
    }
  ],
  "word": "算学"
}

{
  "called_from": "parser/304",
  "msg": "HTML tag <span> not properly closed",
  "path": [
    "算学"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "算学",
  "trace": "started on line 2, detected on line 2"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "算学"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "算学",
  "trace": ""
}