"convulsional" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "convulsion",
        "3": "al"
      },
      "expansion": "convulsion + -al",
      "name": "suffix"
    }
  ],
  "etymology_text": "From convulsion + -al.",
  "forms": [
    {
      "form": "more convulsional",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most convulsional",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "convulsional (comparative more convulsional, superlative most convulsional)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -al",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "January 9 1824, Charles Lamb, letter to Bernard Barton\nan occasional convulsional cough"
        }
      ],
      "glosses": [
        "Pertaining to, or having, convulsions."
      ],
      "id": "en-convulsional-en-adj-gFOzyHUi",
      "links": [
        [
          "convulsion",
          "convulsion"
        ]
      ]
    }
  ],
  "word": "convulsional"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "convulsion",
        "3": "al"
      },
      "expansion": "convulsion + -al",
      "name": "suffix"
    }
  ],
  "etymology_text": "From convulsion + -al.",
  "forms": [
    {
      "form": "more convulsional",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most convulsional",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "convulsional (comparative more convulsional, superlative most convulsional)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms suffixed with -al",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "text": "January 9 1824, Charles Lamb, letter to Bernard Barton\nan occasional convulsional cough"
        }
      ],
      "glosses": [
        "Pertaining to, or having, convulsions."
      ],
      "links": [
        [
          "convulsion",
          "convulsion"
        ]
      ]
    }
  ],
  "word": "convulsional"
}