"Ⓨ" meaning in Japanese

{
  "head_templates": [
    {
      "args": {
        "1": "ja",
        "2": "symbol"
      },
      "expansion": "Ⓨ",
      "name": "head"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "symbol",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese symbols",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Indicating the first date at which the item must be sold at a fixed price under saihan seido, Japan's resale price maintenance system."
      ],
      "id": "en-Ⓨ-ja-symbol-l2KF0ziB",
      "qualifier": "music and print publications",
      "raw_glosses": [
        "(music and print publications) Indicating the first date at which the item must be sold at a fixed price under saihan seido, Japan's resale price maintenance system."
      ],
      "related": [
        {
          "word": "Ⓧ"
        }
      ]
    }
  ],
  "word": "Ⓨ"
}

{
  "head_templates": [
    {
      "args": {
        "1": "ja",
        "2": "symbol"
      },
      "expansion": "Ⓨ",
      "name": "head"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "symbol",
  "related": [
    {
      "word": "Ⓧ"
    }
  ],
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese symbols",
        "Pages with 2 entries",
        "Pages with entries"
      ],
      "glosses": [
        "Indicating the first date at which the item must be sold at a fixed price under saihan seido, Japan's resale price maintenance system."
      ],
      "qualifier": "music and print publications",
      "raw_glosses": [
        "(music and print publications) Indicating the first date at which the item must be sold at a fixed price under saihan seido, Japan's resale price maintenance system."
      ]
    }
  ],
  "word": "Ⓨ"
}