"+4" meaning in Conventions internationales

{
  "antonyms": [
    {
      "word": "−4"
    }
  ],
  "categories": [
    {
      "kind": "other",
      "name": "Compositions en conventions internationales",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Numéraux",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Sigles en conventions internationales",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Conventions internationales",
      "orig": "conventions internationales",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "composé de + (« plus, positif ») et de 4 (« quatre »)."
  ],
  "lang": "Conventions internationales",
  "lang_code": "conv",
  "pos": "num",
  "pos_title": "Numéral",
  "raw_tags": [
    "Sigle"
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en conventions internationales des mathématiques",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Quatre en temps que nombre entier relatif."
      ],
      "id": "fr-+4-conv-num-nI6FseiQ",
      "topics": [
        "mathematics"
      ]
    }
  ],
  "tags": [
    "invariable"
  ],
  "word": "+4"
}

{
  "categories": [
    {
      "kind": "other",
      "name": "Adjectifs en conventions internationales",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Compositions en conventions internationales",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Sigles en conventions internationales",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Conventions internationales",
      "orig": "conventions internationales",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "composé de + (« sensible ») et de 4 (« quarte »)."
  ],
  "lang": "Conventions internationales",
  "lang_code": "conv",
  "pos": "adj",
  "pos_title": "Adjectif",
  "raw_tags": [
    "Sigle"
  ],
  "related": [
    {
      "word": "⁷₊"
    },
    {
      "word": "⁶₅"
    },
    {
      "word": "+6"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en français",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Lexique en conventions internationales de la musique",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Un accord V⁺⁴ est habituellement suivi d’un accord I⁶ car la sensible monte à la tonique par mouvement conjoint tandis que la basse descend également par mouvement conjoint."
        }
      ],
      "glosses": [
        "(Accord) de quarte sensible. (Accord) de triton. Chiffrage du troisième renversement de l’accord de septième de dominante en basse chiffrée."
      ],
      "id": "fr-+4-conv-adj-NDyVoJf9",
      "topics": [
        "music"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\plys.katʁ\\"
    },
    {
      "ipa": "\\də.kaʁt.sɑ̃.sibl\\"
    },
    {
      "ipa": "\\də.tʁi.tɔ̃\\"
    }
  ],
  "tags": [
    "invariable"
  ],
  "word": "+4"
}

{
  "antonyms": [
    {
      "word": "−4"
    }
  ],
  "categories": [
    "Compositions en conventions internationales",
    "Numéraux",
    "Sigles en conventions internationales",
    "conventions internationales"
  ],
  "etymology_texts": [
    "composé de + (« plus, positif ») et de 4 (« quatre »)."
  ],
  "lang": "Conventions internationales",
  "lang_code": "conv",
  "pos": "num",
  "pos_title": "Numéral",
  "raw_tags": [
    "Sigle"
  ],
  "senses": [
    {
      "categories": [
        "Lexique en conventions internationales des mathématiques"
      ],
      "glosses": [
        "Quatre en temps que nombre entier relatif."
      ],
      "topics": [
        "mathematics"
      ]
    }
  ],
  "tags": [
    "invariable"
  ],
  "word": "+4"
}

{
  "categories": [
    "Adjectifs en conventions internationales",
    "Compositions en conventions internationales",
    "Sigles en conventions internationales",
    "conventions internationales"
  ],
  "etymology_texts": [
    "composé de + (« sensible ») et de 4 (« quarte »)."
  ],
  "lang": "Conventions internationales",
  "lang_code": "conv",
  "pos": "adj",
  "pos_title": "Adjectif",
  "raw_tags": [
    "Sigle"
  ],
  "related": [
    {
      "word": "⁷₊"
    },
    {
      "word": "⁶₅"
    },
    {
      "word": "+6"
    }
  ],
  "senses": [
    {
      "categories": [
        "Exemples en français",
        "Lexique en conventions internationales de la musique"
      ],
      "examples": [
        {
          "text": "Un accord V⁺⁴ est habituellement suivi d’un accord I⁶ car la sensible monte à la tonique par mouvement conjoint tandis que la basse descend également par mouvement conjoint."
        }
      ],
      "glosses": [
        "(Accord) de quarte sensible. (Accord) de triton. Chiffrage du troisième renversement de l’accord de septième de dominante en basse chiffrée."
      ],
      "topics": [
        "music"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\plys.katʁ\\"
    },
    {
      "ipa": "\\də.kaʁt.sɑ̃.sibl\\"
    },
    {
      "ipa": "\\də.tʁi.tɔ̃\\"
    }
  ],
  "tags": [
    "invariable"
  ],
  "word": "+4"
}