"Jacksonian seizure" meaning in English

{
  "etymology_text": "Eponym, from John Hughlings Jackson, English neurologist.",
  "forms": [
    {
      "form": "Jacksonian seizures",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Jacksonian seizure (plural Jacksonian seizures)",
      "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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          "name": "English entries with language name categories using raw markup",
          "parents": [
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        },
        {
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          "name": "Pages with 1 entry",
          "parents": [],
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Medicine",
          "orig": "en:Medicine",
          "parents": [
            "Biology",
            "Healthcare",
            "Sciences",
            "Health",
            "All topics",
            "Body",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A seizure characteristic of certain forms of epilepsy."
      ],
      "id": "en-Jacksonian_seizure-en-noun-VzykRuZS",
      "links": [
        [
          "medicine",
          "medicine"
        ],
        [
          "epilepsy",
          "epilepsy"
        ]
      ],
      "raw_glosses": [
        "(medicine) A seizure characteristic of certain forms of epilepsy."
      ],
      "topics": [
        "medicine",
        "sciences"
      ],
      "wikipedia": [
        "Jacksonian seizure"
      ]
    }
  ],
  "word": "Jacksonian seizure"
}

{
  "etymology_text": "Eponym, from John Hughlings Jackson, English neurologist.",
  "forms": [
    {
      "form": "Jacksonian seizures",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Jacksonian seizure (plural Jacksonian seizures)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "Pages with 1 entry",
        "en:Medicine"
      ],
      "glosses": [
        "A seizure characteristic of certain forms of epilepsy."
      ],
      "links": [
        [
          "medicine",
          "medicine"
        ],
        [
          "epilepsy",
          "epilepsy"
        ]
      ],
      "raw_glosses": [
        "(medicine) A seizure characteristic of certain forms of epilepsy."
      ],
      "topics": [
        "medicine",
        "sciences"
      ],
      "wikipedia": [
        "Jacksonian seizure"
      ]
    }
  ],
  "word": "Jacksonian seizure"
}