"√" meaning in International

{
  "categories": [
    {
      "kind": "other",
      "name": "Anagramm sortiert (International)",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "International",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Rückläufige Wörterliste (International)",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Symbol (International)",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Siehe auch",
      "orig": "siehe auch",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "∛"
    },
    {
      "word": "∜"
    }
  ],
  "etymology_text": "vermutlich eine Abwandlung des Buchstabens r für radizieren; so 1637 von René Descartes ^(→ WP) eingeführt",
  "lang": "International",
  "lang_code": "mul",
  "pos": "symbol",
  "senses": [
    {
      "examples": [
        {
          "text": "√16 = 4"
        },
        {
          "text": "√=x^( frac )12"
        }
      ],
      "glosses": [
        "die Wurzel (Quadratwurzel)"
      ],
      "id": "de-√-mul-symbol-ODF1wLQg",
      "sense_index": "1",
      "topics": [
        "mathematics"
      ]
    }
  ],
  "word": "√"
}

{
  "categories": [
    "Anagramm sortiert (International)",
    "International",
    "Rückläufige Wörterliste (International)",
    "Symbol (International)",
    "siehe auch"
  ],
  "derived": [
    {
      "word": "∛"
    },
    {
      "word": "∜"
    }
  ],
  "etymology_text": "vermutlich eine Abwandlung des Buchstabens r für radizieren; so 1637 von René Descartes ^(→ WP) eingeführt",
  "lang": "International",
  "lang_code": "mul",
  "pos": "symbol",
  "senses": [
    {
      "examples": [
        {
          "text": "√16 = 4"
        },
        {
          "text": "√=x^( frac )12"
        }
      ],
      "glosses": [
        "die Wurzel (Quadratwurzel)"
      ],
      "sense_index": "1",
      "topics": [
        "mathematics"
      ]
    }
  ],
  "word": "√"
}