"substitutivity" meaning in English

{
  "etymology_templates": [
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      "args": {
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        "2": "substitutive",
        "3": "ity"
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      "expansion": "substitutive + -ity",
      "name": "suffix"
    }
  ],
  "etymology_text": "substitutive + -ity",
  "head_templates": [
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      "args": {
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      "expansion": "substitutivity (uncountable)",
      "name": "en-noun"
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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",
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          "name": "Philosophy",
          "orig": "en:Philosophy",
          "parents": [
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "principle of substitutivity"
        }
      ],
      "examples": [
        {
          "ref": "1943, Willard V. Quine, “Notes on Existence and Necessity”, in The Journal of Philosophy, volume 40, number 5, page 113",
          "text": "One of the fundamental principles governing identity is that of substitutivity—or, as it might well be called, that of indiscernibility of identicals. It provides that, given a true statement of identity, one of its two terms may be substituted for the other in any true statement and the result will be true.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A logical relationship in which two terms can be mutually substituted without affecting the truth value of any propositions in which the terms occur, thereby establishing that the terms are identical."
      ],
      "id": "en-substitutivity-en-noun-QWIzY3FH",
      "links": [
        [
          "philosophy",
          "philosophy"
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        [
          "logical",
          "logical"
        ],
        [
          "relationship",
          "relationship"
        ],
        [
          "term",
          "term"
        ],
        [
          "mutually",
          "mutually"
        ],
        [
          "substitute",
          "substitute"
        ],
        [
          "truth value",
          "truth value"
        ],
        [
          "proposition",
          "proposition"
        ],
        [
          "identical",
          "identical"
        ]
      ],
      "raw_glosses": [
        "(philosophy) A logical relationship in which two terms can be mutually substituted without affecting the truth value of any propositions in which the terms occur, thereby establishing that the terms are identical."
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "human-sciences",
        "philosophy",
        "sciences"
      ]
    }
  ],
  "word": "substitutivity"
}

{
  "derived": [
    {
      "word": "principle of substitutivity"
    }
  ],
  "etymology_templates": [
    {
      "args": {
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        "2": "substitutive",
        "3": "ity"
      },
      "expansion": "substitutive + -ity",
      "name": "suffix"
    }
  ],
  "etymology_text": "substitutive + -ity",
  "head_templates": [
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      "expansion": "substitutivity (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "examples": [
        {
          "ref": "1943, Willard V. Quine, “Notes on Existence and Necessity”, in The Journal of Philosophy, volume 40, number 5, page 113",
          "text": "One of the fundamental principles governing identity is that of substitutivity—or, as it might well be called, that of indiscernibility of identicals. It provides that, given a true statement of identity, one of its two terms may be substituted for the other in any true statement and the result will be true.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A logical relationship in which two terms can be mutually substituted without affecting the truth value of any propositions in which the terms occur, thereby establishing that the terms are identical."
      ],
      "links": [
        [
          "philosophy",
          "philosophy"
        ],
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          "logical",
          "logical"
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          "relationship",
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        ],
        [
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          "mutually",
          "mutually"
        ],
        [
          "substitute",
          "substitute"
        ],
        [
          "truth value",
          "truth value"
        ],
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          "proposition",
          "proposition"
        ],
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          "identical",
          "identical"
        ]
      ],
      "raw_glosses": [
        "(philosophy) A logical relationship in which two terms can be mutually substituted without affecting the truth value of any propositions in which the terms occur, thereby establishing that the terms are identical."
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "human-sciences",
        "philosophy",
        "sciences"
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  "word": "substitutivity"
}