"内殻" meaning in Japanese

{
  "forms": [
    {
      "form": "内殻",
      "ruby": [
        [
          "内",
          "ない"
        ],
        [
          "殻",
          "かく"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "naikaku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "內殼",
      "tags": [
        "alternative",
        "kanji",
        "kyūjitai"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ないかく"
      },
      "expansion": "内(ない)殻(かく) • (naikaku)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms read with on'yomi",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with 2 kanji",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with Heiban pitch accent (Tōkyō)",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with non-redundant non-automated sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "ja",
          "name": "Chemistry",
          "orig": "ja:Chemistry",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "inner shell (a set of atomic orbitals with a relatively low principal quantum number)"
      ],
      "id": "en-内殻-ja-noun-xGEK3v8B",
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "shell",
          "shell"
        ],
        [
          "atomic orbital",
          "atomic orbital#English"
        ],
        [
          "principal quantum number",
          "principal quantum number#English"
        ]
      ],
      "raw_glosses": [
        "(chemistry) inner shell (a set of atomic orbitals with a relatively low principal quantum number)"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "sounds": [
    {
      "other": "ないかく"
    },
    {
      "ipa": "[na̠ika̠kɯ̟]"
    }
  ],
  "word": "内殻"
}

{
  "forms": [
    {
      "form": "内殻",
      "ruby": [
        [
          "内",
          "ない"
        ],
        [
          "殻",
          "かく"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "naikaku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "內殼",
      "tags": [
        "alternative",
        "kanji",
        "kyūjitai"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ないかく"
      },
      "expansion": "内(ない)殻(かく) • (naikaku)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese nouns",
        "Japanese terms read with on'yomi",
        "Japanese terms spelled with second grade kanji",
        "Japanese terms spelled with secondary school kanji",
        "Japanese terms spelled with 内 read as ない",
        "Japanese terms spelled with 殻 read as かく",
        "Japanese terms with 2 kanji",
        "Japanese terms with Heiban pitch accent (Tōkyō)",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with IPA pronunciation with pitch accent",
        "Japanese terms with non-redundant non-automated sortkeys",
        "Japanese terms with redundant sortkeys",
        "Pages with 1 entry",
        "Pages with entries",
        "ja:Chemistry"
      ],
      "glosses": [
        "inner shell (a set of atomic orbitals with a relatively low principal quantum number)"
      ],
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "shell",
          "shell"
        ],
        [
          "atomic orbital",
          "atomic orbital#English"
        ],
        [
          "principal quantum number",
          "principal quantum number#English"
        ]
      ],
      "raw_glosses": [
        "(chemistry) inner shell (a set of atomic orbitals with a relatively low principal quantum number)"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "sounds": [
    {
      "other": "ないかく"
    },
    {
      "ipa": "[na̠ika̠kɯ̟]"
    }
  ],
  "word": "内殻"
}