"thorium-228" meaning in English

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        {
          "kind": "topical",
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          "name": "Thorium",
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      "glosses": [
        "A radioactive isotope of thorium, ²²⁸₉₀Th, having a half-life of 1.9 years; it occurs naturally in small amounts, as member of the thorium-232 decay chain."
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        "(physics) A radioactive isotope of thorium, ²²⁸₉₀Th, having a half-life of 1.9 years; it occurs naturally in small amounts, as member of the thorium-232 decay chain."
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        {
          "word": "radiothorium"
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  "word": "thorium-228"
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        "A radioactive isotope of thorium, ²²⁸₉₀Th, having a half-life of 1.9 years; it occurs naturally in small amounts, as member of the thorium-232 decay chain."
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        "(physics) A radioactive isotope of thorium, ²²⁸₉₀Th, having a half-life of 1.9 years; it occurs naturally in small amounts, as member of the thorium-232 decay chain."
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  "word": "thorium-228"
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