"definite clause" meaning in English

{
  "forms": [
    {
      "form": "definite clauses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "definite clause (plural definite clauses)",
      "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": "Logic",
          "orig": "en:Logic",
          "parents": [
            "Formal sciences",
            "Philosophy",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "The clauses ¬p∨q, ¬p∨¬q∨r, and ¬p∨¬q∨¬r∨s are examples of definite clauses. At least in classical logic these would be equivalent to the formulae p→q, (p∧q)→r, and (p∧q∧r)→s, respectively."
        }
      ],
      "glosses": [
        "A Horn clause with exactly one positive literal."
      ],
      "id": "en-definite_clause-en-noun-8ivczval",
      "links": [
        [
          "logic",
          "logic"
        ],
        [
          "Horn clause",
          "Horn clause"
        ],
        [
          "positive",
          "positive"
        ],
        [
          "literal",
          "literal"
        ]
      ],
      "raw_glosses": [
        "(logic) A Horn clause with exactly one positive literal."
      ],
      "topics": [
        "human-sciences",
        "logic",
        "mathematics",
        "philosophy",
        "sciences"
      ],
      "wikipedia": [
        "Horn clause"
      ]
    }
  ],
  "word": "definite clause"
}

{
  "forms": [
    {
      "form": "definite clauses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "definite clause (plural definite clauses)",
      "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",
        "en:Logic"
      ],
      "examples": [
        {
          "text": "The clauses ¬p∨q, ¬p∨¬q∨r, and ¬p∨¬q∨¬r∨s are examples of definite clauses. At least in classical logic these would be equivalent to the formulae p→q, (p∧q)→r, and (p∧q∧r)→s, respectively."
        }
      ],
      "glosses": [
        "A Horn clause with exactly one positive literal."
      ],
      "links": [
        [
          "logic",
          "logic"
        ],
        [
          "Horn clause",
          "Horn clause"
        ],
        [
          "positive",
          "positive"
        ],
        [
          "literal",
          "literal"
        ]
      ],
      "raw_glosses": [
        "(logic) A Horn clause with exactly one positive literal."
      ],
      "topics": [
        "human-sciences",
        "logic",
        "mathematics",
        "philosophy",
        "sciences"
      ],
      "wikipedia": [
        "Horn clause"
      ]
    }
  ],
  "word": "definite clause"
}