"prefix notation" meaning in English

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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "Polish notation"
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      "id": "en-prefix_notation-en-noun-LM6CEXlo",
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          "Polish notation",
          "Polish notation"
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      "translations": [
        {
          "code": "cs",
          "lang": "Czech",
          "note": "prefixová notace f",
          "sense": "Polish notation"
        },
        {
          "code": "el",
          "lang": "Greek",
          "roman": "symvolismos prothématos",
          "sense": "Polish notation",
          "tags": [
            "masculine"
          ],
          "word": "συμβολισμος προθέματος"
        },
        {
          "alt": "ぜんちきほう",
          "code": "ja",
          "lang": "Japanese",
          "roman": "zenchikihō",
          "sense": "Polish notation",
          "word": "前置記法"
        }
      ]
    }
  ],
  "word": "prefix notation"
}

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  "lang_code": "en",
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  "translations": [
    {
      "code": "cs",
      "lang": "Czech",
      "note": "prefixová notace f",
      "sense": "Polish notation"
    },
    {
      "code": "el",
      "lang": "Greek",
      "roman": "symvolismos prothématos",
      "sense": "Polish notation",
      "tags": [
        "masculine"
      ],
      "word": "συμβολισμος προθέματος"
    },
    {
      "alt": "ぜんちきほう",
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      "lang": "Japanese",
      "roman": "zenchikihō",
      "sense": "Polish notation",
      "word": "前置記法"
    }
  ],
  "word": "prefix notation"
}