"روبيديوم" meaning in Arabic

{
  "forms": [
    {
      "form": "رُوبِيدِيُوم",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "rūbīdiyūm",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "رُوبِيدِيُوم",
        "2": "m"
      },
      "expansion": "رُوبِيدِيُوم • (rūbīdiyūm) m",
      "name": "ar-noun"
    }
  ],
  "lang": "Arabic",
  "lang_code": "ar",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Arabic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Arabic entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ar",
          "name": "Chemical elements",
          "orig": "ar:Chemical elements",
          "parents": [
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "rubidium"
      ],
      "id": "en-روبيديوم-ar-noun-sNfuv4KN",
      "links": [
        [
          "rubidium",
          "rubidium"
        ]
      ]
    }
  ],
  "word": "روبيديوم"
}

{
  "forms": [
    {
      "form": "رُوبِيدِيُوم",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "rūbīdiyūm",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "رُوبِيدِيُوم",
        "2": "m"
      },
      "expansion": "رُوبِيدِيُوم • (rūbīdiyūm) m",
      "name": "ar-noun"
    }
  ],
  "lang": "Arabic",
  "lang_code": "ar",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Arabic entries with incorrect language header",
        "Arabic entries with topic categories using raw markup",
        "Arabic lemmas",
        "Arabic masculine nouns",
        "Arabic nouns",
        "ar:Chemical elements"
      ],
      "glosses": [
        "rubidium"
      ],
      "links": [
        [
          "rubidium",
          "rubidium"
        ]
      ]
    }
  ],
  "word": "روبيديوم"
}