"radioactinium" meaning in English

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      "expansion": "radio- + actinium",
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  ],
  "etymology_text": "From radio- + actinium.",
  "head_templates": [
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      "expansion": "radioactinium (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        {
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          "name": "English terms prefixed with radio-",
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        }
      ],
      "glosses": [
        "The radioactive isotope of actinium, ²²⁷₈₉Ac, having a half-life of 21.7 years"
      ],
      "id": "en-radioactinium-en-noun-jNR5~PM5",
      "links": [
        [
          "physics",
          "physics"
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        [
          "radioactive",
          "radioactive"
        ],
        [
          "isotope",
          "isotope"
        ],
        [
          "actinium",
          "actinium"
        ],
        [
          "half-life",
          "half-life"
        ]
      ],
      "raw_glosses": [
        "(physics) The radioactive isotope of actinium, ²²⁷₈₉Ac, having a half-life of 21.7 years"
      ],
      "synonyms": [
        {
          "word": "actinium-227"
        }
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "radioactinium"
}

{
  "etymology_templates": [
    {
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        "2": "radio",
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      "expansion": "radio- + actinium",
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  ],
  "etymology_text": "From radio- + actinium.",
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      "expansion": "radioactinium (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "The radioactive isotope of actinium, ²²⁷₈₉Ac, having a half-life of 21.7 years"
      ],
      "links": [
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          "physics",
          "physics"
        ],
        [
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        [
          "actinium",
          "actinium"
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        [
          "half-life",
          "half-life"
        ]
      ],
      "raw_glosses": [
        "(physics) The radioactive isotope of actinium, ²²⁷₈₉Ac, having a half-life of 21.7 years"
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
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  ],
  "synonyms": [
    {
      "word": "actinium-227"
    }
  ],
  "word": "radioactinium"
}