"単3形乾電池" meaning in Japanese

{
  "forms": [
    {
      "form": "單3形乾電池",
      "tags": [
        "alternative",
        "kanji",
        "kyūjitai"
      ]
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "soft-redirect",
  "redirects": [
    "単三形乾電池"
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese terms with non-redundant non-automated sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with rendaku",
          "parents": [],
          "source": "w"
        }
      ],
      "id": "en-単3形乾電池-ja-soft-redirect-47DEQpj8",
      "tags": [
        "no-gloss"
      ]
    }
  ],
  "word": "単3形乾電池"
}

{
  "forms": [
    {
      "form": "單3形乾電池",
      "tags": [
        "alternative",
        "kanji",
        "kyūjitai"
      ]
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "soft-redirect",
  "redirects": [
    "単三形乾電池"
  ],
  "senses": [
    {
      "categories": [
        "Japanese terms spelled with 乾 read as かん",
        "Japanese terms spelled with 単 read as たん",
        "Japanese terms spelled with 形 read as かた",
        "Japanese terms spelled with 池 read as ち",
        "Japanese terms spelled with 電 read as でん",
        "Japanese terms with non-redundant non-automated sortkeys",
        "Japanese terms with rendaku"
      ],
      "tags": [
        "no-gloss"
      ]
    }
  ],
  "word": "単3形乾電池"
}