"reionization" meaning in English

{
  "coordinate_terms": [
    {
      "_dis1": "0 0",
      "word": "recombination"
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  ],
  "derived": [
    {
      "_dis1": "0 0",
      "word": "Reionization"
    }
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  "etymology_templates": [
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      "expansion": "re- + ionization",
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    }
  ],
  "etymology_text": "From re- + ionization.",
  "forms": [
    {
      "form": "reionizations",
      "tags": [
        "plural"
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      "expansion": "reionization (plural reionizations)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "The act or process of reionizing."
      ],
      "id": "en-reionization-en-noun-TrRVKGpa",
      "links": [
        [
          "reionizing",
          "reionize"
        ]
      ]
    },
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          "kind": "topical",
          "langcode": "en",
          "name": "Astrophysics",
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        {
          "_dis": "28 72",
          "kind": "other",
          "name": "English terms prefixed with re-",
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        {
          "_dis": "38 62",
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        {
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        {
          "_dis": "15 85",
          "kind": "topical",
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          "source": "w+disamb"
        }
      ],
      "glosses": [
        "The process by which the plasma of electrons and protons is produced after the Big Bang, when stars and galaxies ionized neutral hydrogen, or the era in which this occurs."
      ],
      "id": "en-reionization-en-noun-buXF3eO6",
      "links": [
        [
          "astrophysics",
          "astrophysics"
        ],
        [
          "plasma",
          "plasma"
        ],
        [
          "electrons",
          "electrons"
        ],
        [
          "protons",
          "protons"
        ],
        [
          "Big Bang",
          "Big Bang"
        ],
        [
          "hydrogen",
          "hydrogen"
        ]
      ],
      "raw_glosses": [
        "(astrophysics) The process by which the plasma of electrons and protons is produced after the Big Bang, when stars and galaxies ionized neutral hydrogen, or the era in which this occurs."
      ],
      "topics": [
        "astrophysics"
      ]
    }
  ],
  "word": "reionization"
}

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  "coordinate_terms": [
    {
      "word": "recombination"
    }
  ],
  "derived": [
    {
      "word": "Reionization"
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  ],
  "etymology_text": "From re- + ionization.",
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      ]
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  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "The act or process of reionizing."
      ],
      "links": [
        [
          "reionizing",
          "reionize"
        ]
      ]
    },
    {
      "categories": [
        "en:Astrophysics"
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        "The process by which the plasma of electrons and protons is produced after the Big Bang, when stars and galaxies ionized neutral hydrogen, or the era in which this occurs."
      ],
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        "(astrophysics) The process by which the plasma of electrons and protons is produced after the Big Bang, when stars and galaxies ionized neutral hydrogen, or the era in which this occurs."
      ],
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        "astrophysics"
      ]
    }
  ],
  "word": "reionization"
}