"HEU" meaning in English

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  "lang_code": "en",
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          "name": "Chemistry",
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        {
          "kind": "topical",
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          "name": "Nuclear warfare",
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          "kind": "topical",
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          "name": "Radioactivity",
          "orig": "en:Radioactivity",
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            "Nuclear physics",
            "Radiation",
            "Physics",
            "Quantum mechanics",
            "Energy",
            "Sciences",
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            "Fundamental"
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Uranium",
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            "Actinide series chemical elements",
            "Chemical elements",
            "Metals",
            "Radioactivity",
            "Matter",
            "Metallurgy",
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            "Fundamental"
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        "Initialism of highly-enriched uranium."
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      "related": [
        {
          "word": "LEU"
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        {
          "word": "SEU"
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          "word": "DU"
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  "word": "HEU"
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  "lang_code": "en",
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        "en:Chemistry",
        "en:Nuclear warfare",
        "en:Physics",
        "en:Radioactivity",
        "en:Uranium"
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        "Initialism of highly-enriched uranium."
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