"oral mucositis" meaning in English

{
  "etymology_text": "oral (of the mouth) + mucositis (inflammation of the mucosa)",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "oral mucositis",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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          "parents": [
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Medical signs and symptoms",
          "orig": "en:Medical signs and symptoms",
          "parents": [
            "Health",
            "Pathology",
            "Body",
            "Medicine",
            "Human",
            "Biology",
            "Sciences",
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "glosses": [
        "Inflammation of the mucus membranes of the mouth."
      ],
      "id": "en-oral_mucositis-en-noun-BV~Jrea3"
    }
  ],
  "word": "oral mucositis"
}

{
  "etymology_text": "oral (of the mouth) + mucositis (inflammation of the mucosa)",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "oral mucositis",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English nouns with unknown or uncertain plurals",
        "English terms with non-redundant non-automated sortkeys",
        "en:Medical signs and symptoms"
      ],
      "glosses": [
        "Inflammation of the mucus membranes of the mouth."
      ]
    }
  ],
  "word": "oral mucositis"
}