"四極管" meaning in Japanese

{
  "forms": [
    {
      "form": "四極管",
      "ruby": [
        [
          "四",
          "よん"
        ],
        [
          "極",
          "きょく"
        ],
        [
          "管",
          "かん"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "yonkyokukan",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "よんきょくかん"
      },
      "expansion": "四(よん)極(きょく)管(かん) • (yonkyokukan)",
      "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 with 3 kanji",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with non-redundant non-automated sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant script codes",
          "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": "Electronics",
          "orig": "ja:Electronics",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "tetrode (vacuum tube)"
      ],
      "hypernyms": [
        {
          "roman": "shinkūkan",
          "ruby": [
            [
              "真空管",
              "しんくうかん"
            ]
          ],
          "word": "真空管"
        }
      ],
      "id": "en-四極管-ja-noun-asUCBmXR",
      "links": [
        [
          "electronics",
          "electronics"
        ],
        [
          "tetrode",
          "tetrode"
        ]
      ],
      "raw_glosses": [
        "(electronics) tetrode (vacuum tube)"
      ],
      "topics": [
        "business",
        "electrical-engineering",
        "electricity",
        "electromagnetism",
        "electronics",
        "energy",
        "engineering",
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "sounds": [
    {
      "other": "よんきょくかん"
    },
    {
      "ipa": "[jõ̞ŋʲkʲo̞kɯ̟̊kã̠ɴ]"
    },
    {
      "note": "Osaka",
      "other": "[yóńkyókúkáń]"
    }
  ],
  "word": "四極管"
}

{
  "forms": [
    {
      "form": "四極管",
      "ruby": [
        [
          "四",
          "よん"
        ],
        [
          "極",
          "きょく"
        ],
        [
          "管",
          "かん"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "yonkyokukan",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "よんきょくかん"
      },
      "expansion": "四(よん)極(きょく)管(かん) • (yonkyokukan)",
      "name": "ja-noun"
    }
  ],
  "hypernyms": [
    {
      "roman": "shinkūkan",
      "ruby": [
        [
          "真空管",
          "しんくうかん"
        ]
      ],
      "word": "真空管"
    }
  ],
  "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 spelled with first grade kanji",
        "Japanese terms spelled with fourth grade kanji",
        "Japanese terms with 3 kanji",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with non-redundant non-automated sortkeys",
        "Japanese terms with redundant script codes",
        "Japanese terms with redundant sortkeys",
        "Pages with 1 entry",
        "Pages with entries",
        "ja:Electronics"
      ],
      "glosses": [
        "tetrode (vacuum tube)"
      ],
      "links": [
        [
          "electronics",
          "electronics"
        ],
        [
          "tetrode",
          "tetrode"
        ]
      ],
      "raw_glosses": [
        "(electronics) tetrode (vacuum tube)"
      ],
      "topics": [
        "business",
        "electrical-engineering",
        "electricity",
        "electromagnetism",
        "electronics",
        "energy",
        "engineering",
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "sounds": [
    {
      "other": "よんきょくかん"
    },
    {
      "ipa": "[jõ̞ŋʲkʲo̞kɯ̟̊kã̠ɴ]"
    },
    {
      "note": "Osaka",
      "other": "[yóńkyókúkáń]"
    }
  ],
  "word": "四極管"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "四極管"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "四極管",
  "trace": ""
}