"coronium" meaning in English

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  "etymology_text": "From corona + -ium, coined by a certain A. Gruenwald.",
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      "expansion": "coronium (uncountable)",
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  "lang_code": "en",
  "pos": "noun",
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          "name": "Ions",
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        {
          "kind": "topical",
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Supposed chemical elements",
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            "Sciences",
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        }
      ],
      "coordinate_terms": [
        {
          "word": "geocoronium"
        },
        {
          "word": "nebulium"
        }
      ],
      "glosses": [
        "A supposed chemical element, hypothesized in the 19th century in order to explain a green emission line seen during the total solar eclipse of 7 August 1869 (actually highly ionized iron)."
      ],
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          "solar eclipse",
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      "raw_glosses": [
        "(historical) A supposed chemical element, hypothesized in the 19th century in order to explain a green emission line seen during the total solar eclipse of 7 August 1869 (actually highly ionized iron)."
      ],
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        "historical",
        "uncountable"
      ],
      "wikipedia": [
        "coronium"
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  "word": "coronium"
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    {
      "word": "geocoronium"
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    {
      "word": "nebulium"
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  "etymology_text": "From corona + -ium, coined by a certain A. Gruenwald.",
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  "lang_code": "en",
  "pos": "noun",
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        "en:Supposed chemical elements"
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      "glosses": [
        "A supposed chemical element, hypothesized in the 19th century in order to explain a green emission line seen during the total solar eclipse of 7 August 1869 (actually highly ionized iron)."
      ],
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          "chemical element"
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          "solar eclipse",
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        "(historical) A supposed chemical element, hypothesized in the 19th century in order to explain a green emission line seen during the total solar eclipse of 7 August 1869 (actually highly ionized iron)."
      ],
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        "historical",
        "uncountable"
      ],
      "wikipedia": [
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    }
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  "word": "coronium"
}