"2/2" meaning in Conventions internationales

{
  "categories": [
    {
      "kind": "other",
      "name": "Symboles en conventions internationales",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Conventions internationales",
      "orig": "conventions internationales",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Conventions internationales",
  "lang_code": "conv",
  "pos": "symbol",
  "pos_title": "Symbole 1",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en conventions internationales des mathématiques",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Deux demies (fraction valant 1)."
      ],
      "id": "fr-2/2-conv-symbol-mW3py2we",
      "topics": [
        "mathematics"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\dø.də.mi\\"
    }
  ],
  "word": "2/2"
}

{
  "categories": [
    {
      "kind": "other",
      "name": "Symboles en conventions internationales",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Conventions internationales",
      "orig": "conventions internationales",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Conventions internationales",
  "lang_code": "conv",
  "pos": "symbol",
  "pos_title": "Symbole 2",
  "related": [
    {
      "raw_tags": [
        "U+1D1CD, prolation"
      ],
      "word": "𝇍"
    },
    {
      "word": "2/4"
    },
    {
      "word": "4/4"
    },
    {
      "word": "𝇋"
    },
    {
      "word": "12/8"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en conventions internationales de la musique",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Chiffrage d’une mesure à deux temps, chaque temps étant une blanche."
      ],
      "id": "fr-2/2-conv-symbol-5cwI1sTr",
      "topics": [
        "music"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\dø.dø\\"
    }
  ],
  "synonyms": [
    {
      "raw_tags": [
        "U+1D135, « cé barré »"
      ],
      "word": "𝄵"
    }
  ],
  "word": "2/2"
}

{
  "categories": [
    "Symboles en conventions internationales",
    "conventions internationales"
  ],
  "lang": "Conventions internationales",
  "lang_code": "conv",
  "pos": "symbol",
  "pos_title": "Symbole 1",
  "senses": [
    {
      "categories": [
        "Lexique en conventions internationales des mathématiques"
      ],
      "glosses": [
        "Deux demies (fraction valant 1)."
      ],
      "topics": [
        "mathematics"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\dø.də.mi\\"
    }
  ],
  "word": "2/2"
}

{
  "categories": [
    "Symboles en conventions internationales",
    "conventions internationales"
  ],
  "lang": "Conventions internationales",
  "lang_code": "conv",
  "pos": "symbol",
  "pos_title": "Symbole 2",
  "related": [
    {
      "raw_tags": [
        "U+1D1CD, prolation"
      ],
      "word": "𝇍"
    },
    {
      "word": "2/4"
    },
    {
      "word": "4/4"
    },
    {
      "word": "𝇋"
    },
    {
      "word": "12/8"
    }
  ],
  "senses": [
    {
      "categories": [
        "Lexique en conventions internationales de la musique"
      ],
      "glosses": [
        "Chiffrage d’une mesure à deux temps, chaque temps étant une blanche."
      ],
      "topics": [
        "music"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\dø.dø\\"
    }
  ],
  "synonyms": [
    {
      "raw_tags": [
        "U+1D135, « cé barré »"
      ],
      "word": "𝄵"
    }
  ],
  "word": "2/2"
}