"半径" meaning in Japonais

{
  "categories": [
    {
      "kind": "other",
      "name": "Noms communs en japonais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Japonais",
      "orig": "japonais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    " ",
    "Forme shinjitai, la forme kyūjitai est 半徑."
  ],
  "forms": [
    {
      "form": "はんけい",
      "tags": [
        "hiragana"
      ]
    },
    {
      "form": "hankei",
      "tags": [
        "transcription"
      ]
    },
    {
      "form": "ハンケー",
      "ipas": [
        "\\haŋ˦˨.ke̞˨.i˨.◌˨\\"
      ],
      "raw_tags": [
        "Prononciation"
      ]
    }
  ],
  "lang": "Japonais",
  "lang_code": "ja",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "roman": "chokkei",
      "translation": "diamètre",
      "word": "直径"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en japonais de la géométrie",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Lexique en japonais de la trigonométrie",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Rayon."
      ],
      "id": "fr-半径-ja-noun-5N3J2Sv2",
      "topics": [
        "geometry",
        "trigonometry"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\haŋ˦˨.ke̞˨.i˨.◌˨\\"
    }
  ],
  "word": "半径"
}

{
  "categories": [
    "Noms communs en japonais",
    "japonais"
  ],
  "etymology_texts": [
    " ",
    "Forme shinjitai, la forme kyūjitai est 半徑."
  ],
  "forms": [
    {
      "form": "はんけい",
      "tags": [
        "hiragana"
      ]
    },
    {
      "form": "hankei",
      "tags": [
        "transcription"
      ]
    },
    {
      "form": "ハンケー",
      "ipas": [
        "\\haŋ˦˨.ke̞˨.i˨.◌˨\\"
      ],
      "raw_tags": [
        "Prononciation"
      ]
    }
  ],
  "lang": "Japonais",
  "lang_code": "ja",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "roman": "chokkei",
      "translation": "diamètre",
      "word": "直径"
    }
  ],
  "senses": [
    {
      "categories": [
        "Lexique en japonais de la géométrie",
        "Lexique en japonais de la trigonométrie"
      ],
      "glosses": [
        "Rayon."
      ],
      "topics": [
        "geometry",
        "trigonometry"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\haŋ˦˨.ke̞˨.i˨.◌˨\\"
    }
  ],
  "word": "半径"
}