"四元" meaning in Chinois

{
  "categories": [
    {
      "kind": "other",
      "name": "Adjectifs en chinois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Chinois",
      "orig": "chinois",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Chinois",
  "lang_code": "zh",
  "pos": "adj",
  "pos_title": "Adjectif",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en chinois des mathématiques",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en chinois",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Quaternionique."
      ],
      "id": "fr-四元-zh-adj-9ppsT3dc",
      "topics": [
        "mathematics"
      ]
    }
  ],
  "word": "四元"
}

{
  "categories": [
    "Adjectifs en chinois",
    "chinois"
  ],
  "lang": "Chinois",
  "lang_code": "zh",
  "pos": "adj",
  "pos_title": "Adjectif",
  "senses": [
    {
      "categories": [
        "Lexique en chinois des mathématiques",
        "Wiktionnaire:Exemples manquants en chinois"
      ],
      "glosses": [
        "Quaternionique."
      ],
      "topics": [
        "mathematics"
      ]
    }
  ],
  "word": "四元"
}