"reverse Polish notation" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-",
        "head": "reverse Polish notation"
      },
      "expansion": "reverse Polish notation (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Arithmetic",
          "orig": "en:Arithmetic",
          "parents": [
            "Applied sciences",
            "Mathematics",
            "Sciences",
            "Formal sciences",
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Back in my day, we had reverse Polish notation calculators: You had to write \"2 4 3 * +\" instead of \"2 + 4 * 3\"."
        }
      ],
      "glosses": [
        "An arithmetic notation in which numbers precede the operators to be applied to them."
      ],
      "id": "en-reverse_Polish_notation-en-noun-GV~CYEMZ",
      "links": [
        [
          "arithmetic",
          "arithmetic"
        ],
        [
          "number",
          "number"
        ],
        [
          "precede",
          "precede"
        ],
        [
          "operator",
          "operator"
        ]
      ],
      "raw_glosses": [
        "(arithmetic) An arithmetic notation in which numbers precede the operators to be applied to them."
      ],
      "synonyms": [
        {
          "word": "postfix notation"
        }
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "arithmetic"
      ],
      "translations": [
        {
          "code": "de",
          "lang": "German",
          "sense": "an arithmetic notation",
          "tags": [
            "feminine"
          ],
          "word": "Umgekehrte Polnische Notation"
        },
        {
          "code": "el",
          "lang": "Greek",
          "roman": "antístrofos polonikós symvolismós",
          "sense": "an arithmetic notation",
          "tags": [
            "masculine"
          ],
          "word": "αντίστροφος πολωνικός συμβολισμός"
        },
        {
          "code": "ja",
          "lang": "Japanese",
          "roman": "gyaku Pōrando-kihō",
          "sense": "an arithmetic notation",
          "word": "逆ポーランド記法"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "an arithmetic notation",
          "tags": [
            "feminine"
          ],
          "word": "odwrotna notacja polska"
        },
        {
          "code": "pt",
          "lang": "Portuguese",
          "sense": "an arithmetic notation",
          "tags": [
            "feminine"
          ],
          "word": "notação polonesa reversa"
        },
        {
          "code": "pt",
          "lang": "Portuguese",
          "sense": "an arithmetic notation",
          "tags": [
            "feminine"
          ],
          "word": "notação polonesa inversa"
        },
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "an arithmetic notation",
          "tags": [
            "common-gender"
          ],
          "word": "omvänd polsk notation"
        }
      ],
      "wikipedia": [
        "reverse Polish notation"
      ]
    }
  ],
  "word": "reverse Polish notation"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-",
        "head": "reverse Polish notation"
      },
      "expansion": "reverse Polish notation (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English uncountable nouns",
        "en:Arithmetic"
      ],
      "examples": [
        {
          "text": "Back in my day, we had reverse Polish notation calculators: You had to write \"2 4 3 * +\" instead of \"2 + 4 * 3\"."
        }
      ],
      "glosses": [
        "An arithmetic notation in which numbers precede the operators to be applied to them."
      ],
      "links": [
        [
          "arithmetic",
          "arithmetic"
        ],
        [
          "number",
          "number"
        ],
        [
          "precede",
          "precede"
        ],
        [
          "operator",
          "operator"
        ]
      ],
      "raw_glosses": [
        "(arithmetic) An arithmetic notation in which numbers precede the operators to be applied to them."
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "arithmetic"
      ],
      "wikipedia": [
        "reverse Polish notation"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "postfix notation"
    }
  ],
  "translations": [
    {
      "code": "de",
      "lang": "German",
      "sense": "an arithmetic notation",
      "tags": [
        "feminine"
      ],
      "word": "Umgekehrte Polnische Notation"
    },
    {
      "code": "el",
      "lang": "Greek",
      "roman": "antístrofos polonikós symvolismós",
      "sense": "an arithmetic notation",
      "tags": [
        "masculine"
      ],
      "word": "αντίστροφος πολωνικός συμβολισμός"
    },
    {
      "code": "ja",
      "lang": "Japanese",
      "roman": "gyaku Pōrando-kihō",
      "sense": "an arithmetic notation",
      "word": "逆ポーランド記法"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "an arithmetic notation",
      "tags": [
        "feminine"
      ],
      "word": "odwrotna notacja polska"
    },
    {
      "code": "pt",
      "lang": "Portuguese",
      "sense": "an arithmetic notation",
      "tags": [
        "feminine"
      ],
      "word": "notação polonesa reversa"
    },
    {
      "code": "pt",
      "lang": "Portuguese",
      "sense": "an arithmetic notation",
      "tags": [
        "feminine"
      ],
      "word": "notação polonesa inversa"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "an arithmetic notation",
      "tags": [
        "common-gender"
      ],
      "word": "omvänd polsk notation"
    }
  ],
  "word": "reverse Polish notation"
}