"海王星" meaning in Japonais

{
  "categories": [
    {
      "kind": "other",
      "name": "Compositions en japonais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms propres en japonais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms propres en japonais issus d’un mot en chinois classique",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Japonais",
      "orig": "japonais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Du chinois classique.Composé de 海, kai (« mer »), 王, ō (« roi ») et 星, sei (« astre »), littéralement « astre du roi de la mer », soit « astre de Neptune »."
  ],
  "forms": [
    {
      "form": "かいおうせい",
      "tags": [
        "hiragana"
      ]
    },
    {
      "form": "Kaiōsei",
      "tags": [
        "transcription"
      ]
    }
  ],
  "lang": "Japonais",
  "lang_code": "ja",
  "pos": "name",
  "pos_title": "Nom propre",
  "raw_tags": [
    "\\ka.i.o̞ː.se̞.i\\"
  ],
  "related": [
    {
      "word": "天王星"
    },
    {
      "word": "冥王星"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Planètes en japonais",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Neptune (planète)."
      ],
      "id": "fr-海王星-ja-name-u0hA-~ay",
      "topics": [
        "astronomy"
      ]
    }
  ],
  "word": "海王星"
}

{
  "categories": [
    "Compositions en japonais",
    "Noms propres en japonais",
    "Noms propres en japonais issus d’un mot en chinois classique",
    "japonais"
  ],
  "etymology_texts": [
    "Du chinois classique.Composé de 海, kai (« mer »), 王, ō (« roi ») et 星, sei (« astre »), littéralement « astre du roi de la mer », soit « astre de Neptune »."
  ],
  "forms": [
    {
      "form": "かいおうせい",
      "tags": [
        "hiragana"
      ]
    },
    {
      "form": "Kaiōsei",
      "tags": [
        "transcription"
      ]
    }
  ],
  "lang": "Japonais",
  "lang_code": "ja",
  "pos": "name",
  "pos_title": "Nom propre",
  "raw_tags": [
    "\\ka.i.o̞ː.se̞.i\\"
  ],
  "related": [
    {
      "word": "天王星"
    },
    {
      "word": "冥王星"
    }
  ],
  "senses": [
    {
      "categories": [
        "Planètes en japonais"
      ],
      "glosses": [
        "Neptune (planète)."
      ],
      "topics": [
        "astronomy"
      ]
    }
  ],
  "word": "海王星"
}