"highly-enriched uranium" meaning in English

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          "kind": "topical",
          "langcode": "en",
          "name": "Uranium",
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            "Actinide series chemical elements",
            "Chemical elements",
            "Metals",
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      "coordinate_terms": [
        {
          "word": "depleted uranium"
        },
        {
          "word": "natural uranium"
        },
        {
          "word": "slightly-enriched uranium"
        },
        {
          "word": "low-enriched uranium"
        }
      ],
      "glosses": [
        "Enriched uranium containing at least 20% uranium-235 (some applications, such as fission weapons and naval reactors, use uranium enriched to as high as 80-95% uranium-235), and therefore capable of sustaining a nuclear fission chain reaction without needing a moderator; used in nuclear weapons and in a few types of nuclear reactors requiring very high power density or high neutron flux."
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          "Enriched uranium",
          "enriched uranium"
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          "uranium-235",
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          "fission weapon",
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          "nuclear fission",
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          "chain reaction",
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          "nuclear reactor",
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          "power density",
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      "qualifier": "nuclear physics",
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        "(nuclear physics, military) Enriched uranium containing at least 20% uranium-235 (some applications, such as fission weapons and naval reactors, use uranium enriched to as high as 80-95% uranium-235), and therefore capable of sustaining a nuclear fission chain reaction without needing a moderator; used in nuclear weapons and in a few types of nuclear reactors requiring very high power density or high neutron flux."
      ],
      "synonyms": [
        {
          "word": "HEU"
        },
        {
          "word": "weapons-grade uranium"
        }
      ],
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        "government",
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  "word": "highly-enriched uranium"
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{
  "coordinate_terms": [
    {
      "word": "depleted uranium"
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    {
      "word": "natural uranium"
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    {
      "word": "slightly-enriched uranium"
    },
    {
      "word": "low-enriched uranium"
    }
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  "lang_code": "en",
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        "Enriched uranium containing at least 20% uranium-235 (some applications, such as fission weapons and naval reactors, use uranium enriched to as high as 80-95% uranium-235), and therefore capable of sustaining a nuclear fission chain reaction without needing a moderator; used in nuclear weapons and in a few types of nuclear reactors requiring very high power density or high neutron flux."
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          "nuclear fission",
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          "chain reaction",
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          "moderator",
          "moderator"
        ],
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          "nuclear weapon",
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        ],
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          "nuclear reactor",
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        ],
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          "power density",
          "power density"
        ],
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          "neutron",
          "neutron"
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          "flux",
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      "qualifier": "nuclear physics",
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        "(nuclear physics, military) Enriched uranium containing at least 20% uranium-235 (some applications, such as fission weapons and naval reactors, use uranium enriched to as high as 80-95% uranium-235), and therefore capable of sustaining a nuclear fission chain reaction without needing a moderator; used in nuclear weapons and in a few types of nuclear reactors requiring very high power density or high neutron flux."
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  "synonyms": [
    {
      "word": "HEU"
    },
    {
      "word": "weapons-grade uranium"
    }
  ],
  "word": "highly-enriched uranium"
}