"光学" meaning in All languages combined

{
  "etymology_templates": [
    {
      "args": {
        "1": "ja",
        "2": "光",
        "3": "学",
        "sort": "こうがく",
        "t1": "photo-",
        "t2": "-graphy; -logy",
        "tr1": "kō-",
        "tr2": "-gaku"
      },
      "expansion": "光 (kō-, “photo-”) + 学 (-gaku, “-graphy; -logy”)",
      "name": "con"
    }
  ],
  "etymology_text": "From 光 (kō-, “photo-”) + 学 (-gaku, “-graphy; -logy”).",
  "forms": [
    {
      "form": "光学",
      "ruby": [
        [
          "光",
          "こう"
        ],
        [
          "学",
          "がく"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "kōgaku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "kwaugaku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "くわうがく",
      "roman": "kwaugaku",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "こうがく",
        "hhira": "くわうがく"
      },
      "expansion": "光(こう)学(がく) • (kōgaku) ^(←くわうがく (kwaugaku)?)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
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          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms prefixed with 光",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms suffixed with 学",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with non-redundant non-automated sortkeys",
          "parents": [
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            "Entry maintenance"
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          "source": "w"
        },
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          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ja",
          "name": "Optics",
          "orig": "ja:Optics",
          "parents": [
            "Physics",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "optics (physics of light and vision)"
      ],
      "id": "en-光学-ja-noun-0J~6kr54",
      "links": [
        [
          "optics",
          "optics"
        ]
      ],
      "wikipedia": [
        "ja:光学"
      ]
    }
  ],
  "sounds": [
    {
      "other": "こーがく"
    },
    {
      "ipa": "[ko̞ːɡa̠kɯ̟ᵝ]"
    }
  ],
  "word": "光学"
}

{
  "lang": "Chinese",
  "lang_code": "zh",
  "pos": "soft-redirect",
  "redirects": [
    "光學"
  ],
  "word": "光学"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ja",
        "2": "光",
        "3": "学",
        "sort": "こうがく",
        "t1": "photo-",
        "t2": "-graphy; -logy",
        "tr1": "kō-",
        "tr2": "-gaku"
      },
      "expansion": "光 (kō-, “photo-”) + 学 (-gaku, “-graphy; -logy”)",
      "name": "con"
    }
  ],
  "etymology_text": "From 光 (kō-, “photo-”) + 学 (-gaku, “-graphy; -logy”).",
  "forms": [
    {
      "form": "光学",
      "ruby": [
        [
          "光",
          "こう"
        ],
        [
          "学",
          "がく"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "kōgaku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "kwaugaku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "くわうがく",
      "roman": "kwaugaku",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "こうがく",
        "hhira": "くわうがく"
      },
      "expansion": "光(こう)学(がく) • (kōgaku) ^(←くわうがく (kwaugaku)?)",
      "name": "ja-noun"
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  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
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        "Japanese terms spelled with first grade kanji",
        "Japanese terms spelled with second grade kanji",
        "Japanese terms suffixed with 学",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with non-redundant non-automated sortkeys",
        "Japanese terms with redundant sortkeys",
        "Japanese terms written with two Han script characters",
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        "ja:Optics"
      ],
      "glosses": [
        "optics (physics of light and vision)"
      ],
      "links": [
        [
          "optics",
          "optics"
        ]
      ],
      "wikipedia": [
        "ja:光学"
      ]
    }
  ],
  "sounds": [
    {
      "other": "こーがく"
    },
    {
      "ipa": "[ko̞ːɡa̠kɯ̟ᵝ]"
    }
  ],
  "word": "光学"
}

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

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