"periodesystem" meaning in Norwegian Bokmål

{
  "etymology_templates": [
    {
      "args": {
        "1": "nb",
        "2": "periode",
        "3": "system"
      },
      "expansion": "periode + system",
      "name": "compound"
    }
  ],
  "etymology_text": "From periode + system.",
  "forms": [
    {
      "form": "periodesystemet",
      "tags": [
        "definite",
        "singular"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "nb",
        "2": "noun",
        "3": "definite singular",
        "4": "periodesystemet",
        "g": "n"
      },
      "expansion": "periodesystem n (definite singular periodesystemet)",
      "name": "head"
    }
  ],
  "lang": "Norwegian Bokmål",
  "lang_code": "nb",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Norwegian Bokmål entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "periodic table (chart of the chemical elements by atomic number)"
      ],
      "id": "en-periodesystem-nb-noun-UKaR8oMY",
      "links": [
        [
          "periodic table",
          "periodic table"
        ]
      ],
      "synonyms": [
        {
          "alt": "det periodiske systemet",
          "word": "periodisk system"
        }
      ],
      "tags": [
        "neuter"
      ],
      "wikipedia": [
        "no:periodesystemet"
      ]
    }
  ],
  "word": "periodesystem"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "nb",
        "2": "periode",
        "3": "system"
      },
      "expansion": "periode + system",
      "name": "compound"
    }
  ],
  "etymology_text": "From periode + system.",
  "forms": [
    {
      "form": "periodesystemet",
      "tags": [
        "definite",
        "singular"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "nb",
        "2": "noun",
        "3": "definite singular",
        "4": "periodesystemet",
        "g": "n"
      },
      "expansion": "periodesystem n (definite singular periodesystemet)",
      "name": "head"
    }
  ],
  "lang": "Norwegian Bokmål",
  "lang_code": "nb",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Norwegian Bokmål compound terms",
        "Norwegian Bokmål entries with incorrect language header",
        "Norwegian Bokmål lemmas",
        "Norwegian Bokmål neuter nouns",
        "Norwegian Bokmål nouns"
      ],
      "glosses": [
        "periodic table (chart of the chemical elements by atomic number)"
      ],
      "links": [
        [
          "periodic table",
          "periodic table"
        ]
      ],
      "tags": [
        "neuter"
      ],
      "wikipedia": [
        "no:periodesystemet"
      ]
    }
  ],
  "synonyms": [
    {
      "alt": "det periodiske systemet",
      "word": "periodisk system"
    }
  ],
  "word": "periodesystem"
}