"理化学" meaning in Japanese

{
  "forms": [
    {
      "form": "理化学",
      "ruby": [
        [
          "理",
          "り"
        ],
        [
          "化",
          "か"
        ],
        [
          "学",
          "がく"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "rikagaku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "rikwagaku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "りくわがく",
      "roman": "rikwagaku",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "りかがく",
        "hhira": "りくわがく"
      },
      "expansion": "理(り)化(か)学(がく) • (rikagaku) ^(←りくわがく (rikwagaku)?)",
      "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 3 kanji",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with Nakadaka pitch accent (Tōkyō)",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "physics and chemistry"
      ],
      "id": "en-理化学-ja-noun-zJl6Wct2",
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "chemistry",
          "chemistry"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "other": "りかがく"
    },
    {
      "ipa": "[ɾʲika̠ɡa̠kɯ̟]"
    }
  ],
  "word": "理化学"
}

{
  "forms": [
    {
      "form": "理化学",
      "ruby": [
        [
          "理",
          "り"
        ],
        [
          "化",
          "か"
        ],
        [
          "学",
          "がく"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "rikagaku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "rikwagaku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "りくわがく",
      "roman": "rikwagaku",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "りかがく",
        "hhira": "りくわがく"
      },
      "expansion": "理(り)化(か)学(がく) • (rikagaku) ^(←りくわがく (rikwagaku)?)",
      "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 historically spelled with わ",
        "Japanese terms spelled with first grade kanji",
        "Japanese terms spelled with second grade kanji",
        "Japanese terms spelled with third grade kanji",
        "Japanese terms with 3 kanji",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with Nakadaka pitch accent (Tōkyō)",
        "Japanese terms with redundant sortkeys",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "physics and chemistry"
      ],
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "chemistry",
          "chemistry"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "other": "りかがく"
    },
    {
      "ipa": "[ɾʲika̠ɡa̠kɯ̟]"
    }
  ],
  "word": "理化学"
}

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

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