"dysmyelination" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "dys",
        "3": "myelination"
      },
      "expansion": "dys- + myelination",
      "name": "prefix"
    }
  ],
  "etymology_text": "From dys- + myelination.",
  "forms": [
    {
      "form": "dysmyelinations",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-",
        "2": "s"
      },
      "expansion": "dysmyelination (usually uncountable, plural dysmyelinations)",
      "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"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with dys-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A condition in which there is a much reduced amount of myelin in nervous tissue"
      ],
      "id": "en-dysmyelination-en-noun-zwUhVGAn",
      "links": [
        [
          "myelin",
          "myelin"
        ],
        [
          "nervous",
          "nervous"
        ],
        [
          "tissue",
          "tissue"
        ]
      ],
      "synonyms": [
        {
          "word": "hypomyelination"
        }
      ],
      "tags": [
        "uncountable",
        "usually"
      ]
    }
  ],
  "word": "dysmyelination"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "dys",
        "3": "myelination"
      },
      "expansion": "dys- + myelination",
      "name": "prefix"
    }
  ],
  "etymology_text": "From dys- + myelination.",
  "forms": [
    {
      "form": "dysmyelinations",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-",
        "2": "s"
      },
      "expansion": "dysmyelination (usually uncountable, plural dysmyelinations)",
      "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 dys-",
        "English uncountable nouns",
        "Pages with 1 entry"
      ],
      "glosses": [
        "A condition in which there is a much reduced amount of myelin in nervous tissue"
      ],
      "links": [
        [
          "myelin",
          "myelin"
        ],
        [
          "nervous",
          "nervous"
        ],
        [
          "tissue",
          "tissue"
        ]
      ],
      "tags": [
        "uncountable",
        "usually"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "hypomyelination"
    }
  ],
  "word": "dysmyelination"
}