"personal equation" meaning in All languages combined

{
  "forms": [
    {
      "form": "personal equations",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "personal equation (plural personal equations)",
      "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": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Any error common to all the observations of some individual; any tendency to error or prejudice due to the personal characteristics of some person for which allowance must be made."
      ],
      "id": "en-personal_equation-en-noun-v7TSU8mK",
      "links": [
        [
          "error",
          "error"
        ],
        [
          "observation",
          "observation"
        ],
        [
          "tendency",
          "tendency"
        ],
        [
          "prejudice",
          "prejudice"
        ],
        [
          "allowance",
          "allowance"
        ]
      ]
    }
  ],
  "word": "personal equation"
}

{
  "forms": [
    {
      "form": "personal equations",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "personal equation (plural personal equations)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "Any error common to all the observations of some individual; any tendency to error or prejudice due to the personal characteristics of some person for which allowance must be made."
      ],
      "links": [
        [
          "error",
          "error"
        ],
        [
          "observation",
          "observation"
        ],
        [
          "tendency",
          "tendency"
        ],
        [
          "prejudice",
          "prejudice"
        ],
        [
          "allowance",
          "allowance"
        ]
      ]
    }
  ],
  "word": "personal equation"
}