"demyelinisation" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "de",
        "3": "myelinisation"
      },
      "expansion": "de- + myelinisation",
      "name": "prefix"
    }
  ],
  "etymology_text": "From de- + myelinisation.",
  "forms": [
    {
      "form": "demyelinisations",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "demyelinisation (countable and uncountable, plural demyelinisations)",
      "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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        {
          "kind": "other",
          "name": "English terms prefixed with de-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Synonym of demyelination"
      ],
      "id": "en-demyelinisation-en-noun-1NjSxui7",
      "links": [
        [
          "demyelination",
          "demyelination#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "demyelination"
        },
        {
          "word": "demyelinization"
        }
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "demyelinisation"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "de",
        "3": "myelinisation"
      },
      "expansion": "de- + myelinisation",
      "name": "prefix"
    }
  ],
  "etymology_text": "From de- + myelinisation.",
  "forms": [
    {
      "form": "demyelinisations",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "demyelinisation (countable and uncountable, plural demyelinisations)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms prefixed with de-",
        "English uncountable nouns",
        "Pages with 1 entry"
      ],
      "glosses": [
        "Synonym of demyelination"
      ],
      "links": [
        [
          "demyelination",
          "demyelination#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "demyelination"
        }
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "demyelinization"
    }
  ],
  "word": "demyelinisation"
}