"common difference" meaning in English

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      "form": "common differences",
      "tags": [
        "plural"
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      "expansion": "common difference (plural common differences)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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      ],
      "examples": [
        {
          "text": "If the first term of an arithmetic sequence is 3 and the common difference is 13, then the fourth term is 42.",
          "type": "example"
        }
      ],
      "glosses": [
        "The constant added to each element of an arithmetic progression to obtain the next."
      ],
      "id": "en-common_difference-en-noun-3MttiTBf",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "arithmetic progression",
          "arithmetic progression"
        ]
      ],
      "raw_glosses": [
        "(mathematics) The constant added to each element of an arithmetic progression to obtain the next."
      ],
      "related": [
        {
          "word": "common ratio"
        }
      ],
      "topics": [
        "mathematics",
        "sciences"
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      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "gōngchā",
          "sense": "constant in arithmetic progression",
          "word": "公差"
        },
        {
          "code": "ga",
          "lang": "Irish",
          "sense": "constant in arithmetic progression",
          "tags": [
            "feminine"
          ],
          "word": "comhbhreis"
        },
        {
          "code": "ro",
          "lang": "Romanian",
          "sense": "constant in arithmetic progression",
          "word": "diferență comună"
        }
      ]
    }
  ],
  "word": "common difference"
}

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      "form": "common differences",
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  "lang_code": "en",
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    {
      "word": "common ratio"
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      "examples": [
        {
          "text": "If the first term of an arithmetic sequence is 3 and the common difference is 13, then the fourth term is 42.",
          "type": "example"
        }
      ],
      "glosses": [
        "The constant added to each element of an arithmetic progression to obtain the next."
      ],
      "links": [
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          "mathematics",
          "mathematics"
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          "arithmetic progression",
          "arithmetic progression"
        ]
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        "(mathematics) The constant added to each element of an arithmetic progression to obtain the next."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
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  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "gōngchā",
      "sense": "constant in arithmetic progression",
      "word": "公差"
    },
    {
      "code": "ga",
      "lang": "Irish",
      "sense": "constant in arithmetic progression",
      "tags": [
        "feminine"
      ],
      "word": "comhbhreis"
    },
    {
      "code": "ro",
      "lang": "Romanian",
      "sense": "constant in arithmetic progression",
      "word": "diferență comună"
    }
  ],
  "word": "common difference"
}