"myelogenesis" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "myelo",
        "3": "genesis"
      },
      "expansion": "myelo- + -genesis",
      "name": "confix"
    }
  ],
  "etymology_text": "From myelo- + -genesis.",
  "head_templates": [
    {
      "args": {
        "1": "?"
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      "expansion": "myelogenesis",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "parents": [
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with myelo-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
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          "parents": [],
          "source": "w"
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      ],
      "glosses": [
        "The formation and development of the brain and spinal cord, and the development of the myelin sheath"
      ],
      "id": "en-myelogenesis-en-noun-u~zsiqL2",
      "links": [
        [
          "brain",
          "brain"
        ],
        [
          "spinal cord",
          "spinal cord"
        ],
        [
          "myelin sheath",
          "myelin sheath"
        ]
      ],
      "related": [
        {
          "word": "myelinization"
        }
      ]
    }
  ],
  "word": "myelogenesis"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "myelo",
        "3": "genesis"
      },
      "expansion": "myelo- + -genesis",
      "name": "confix"
    }
  ],
  "etymology_text": "From myelo- + -genesis.",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "myelogenesis",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "myelinization"
    }
  ],
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        "English nouns",
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        "English terms prefixed with myelo-",
        "English terms suffixed with -genesis",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "The formation and development of the brain and spinal cord, and the development of the myelin sheath"
      ],
      "links": [
        [
          "brain",
          "brain"
        ],
        [
          "spinal cord",
          "spinal cord"
        ],
        [
          "myelin sheath",
          "myelin sheath"
        ]
      ]
    }
  ],
  "word": "myelogenesis"
}