"歯周病" meaning in Japanese

{
  "forms": [
    {
      "form": "歯周病",
      "ruby": [
        [
          "歯",
          "し"
        ],
        [
          "周",
          "しゅう"
        ],
        [
          "病",
          "びょう"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "shishūbyō",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ししゅうびょう"
      },
      "expansion": "歯(し)周(しゅう)病(びょう) • (shishūbyō)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "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 with 3 kanji",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with multiple readings",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ja",
          "name": "Dentistry",
          "orig": "ja:Dentistry",
          "parents": [
            "Medicine",
            "Teeth",
            "Biology",
            "Healthcare",
            "Mouth",
            "Sciences",
            "Health",
            "Face",
            "All topics",
            "Body",
            "Head and neck",
            "Fundamental",
            "Body parts",
            "Anatomy"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "periodontitis"
      ],
      "id": "en-歯周病-ja-noun-l4e3L5ae",
      "links": [
        [
          "dentistry",
          "dentistry"
        ],
        [
          "periodontitis",
          "periodontitis"
        ]
      ],
      "raw_glosses": [
        "(dentistry) periodontitis"
      ],
      "synonyms": [
        {
          "roman": "shishūen",
          "ruby": [
            [
              "歯周炎",
              "ししゅうえん"
            ]
          ],
          "word": "歯周炎"
        }
      ],
      "topics": [
        "dentistry",
        "medicine",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɕiɕɨːbʲo̞ː]"
    }
  ],
  "word": "歯周病"
}

{
  "forms": [
    {
      "form": "歯周病",
      "ruby": [
        [
          "歯",
          "し"
        ],
        [
          "周",
          "しゅう"
        ],
        [
          "病",
          "びょう"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "shishūbyō",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ししゅうびょう"
      },
      "expansion": "歯(し)周(しゅう)病(びょう) • (shishūbyō)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant wikilinks",
        "Japanese nouns",
        "Japanese terms spelled with fourth grade kanji",
        "Japanese terms spelled with third grade kanji",
        "Japanese terms with 3 kanji",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with IPA pronunciation missing pitch accent",
        "Japanese terms with multiple readings",
        "Japanese terms with redundant sortkeys",
        "Pages with 1 entry",
        "Pages with entries",
        "ja:Dentistry"
      ],
      "glosses": [
        "periodontitis"
      ],
      "links": [
        [
          "dentistry",
          "dentistry"
        ],
        [
          "periodontitis",
          "periodontitis"
        ]
      ],
      "raw_glosses": [
        "(dentistry) periodontitis"
      ],
      "topics": [
        "dentistry",
        "medicine",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɕiɕɨːbʲo̞ː]"
    }
  ],
  "synonyms": [
    {
      "roman": "shishūen",
      "ruby": [
        [
          "歯周炎",
          "ししゅうえん"
        ]
      ],
      "word": "歯周炎"
    }
  ],
  "word": "歯周病"
}

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