"Americanitis" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "American",
        "3": "itis"
      },
      "expansion": "American + -itis",
      "name": "suffix"
    }
  ],
  "etymology_text": "American + -itis, because Americans were said to be particularly prone to the condition. Popularised by William James.",
  "head_templates": [
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      "args": {
        "1": "-"
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      "expansion": "Americanitis (uncountable)",
      "name": "en-noun"
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  "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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          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -itis",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "neurasthenia"
      ],
      "id": "en-Americanitis-en-noun-24FKCIU9",
      "links": [
        [
          "neurasthenia",
          "neurasthenia"
        ]
      ],
      "raw_glosses": [
        "(informal, dated) neurasthenia"
      ],
      "tags": [
        "dated",
        "informal",
        "uncountable"
      ],
      "wikipedia": [
        "William James"
      ]
    }
  ],
  "word": "Americanitis"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "American",
        "3": "itis"
      },
      "expansion": "American + -itis",
      "name": "suffix"
    }
  ],
  "etymology_text": "American + -itis, because Americans were said to be particularly prone to the condition. Popularised by William James.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "Americanitis (uncountable)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English 6-syllable words",
        "English dated terms",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English informal terms",
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        "English nouns",
        "English terms suffixed with -itis",
        "English uncountable nouns"
      ],
      "glosses": [
        "neurasthenia"
      ],
      "links": [
        [
          "neurasthenia",
          "neurasthenia"
        ]
      ],
      "raw_glosses": [
        "(informal, dated) neurasthenia"
      ],
      "tags": [
        "dated",
        "informal",
        "uncountable"
      ],
      "wikipedia": [
        "William James"
      ]
    }
  ],
  "word": "Americanitis"
}