"primitive recursion" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Dates manquantes en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Locutions nominales en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    " ",
    "(Date à préciser) → voir primitive et recursion"
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en anglais des mathématiques",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Noms indénombrables en anglais",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en anglais",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Récursion primitive."
      ],
      "id": "fr-primitive_recursion-en-noun-JBSdVY-L",
      "tags": [
        "uncountable"
      ],
      "topics": [
        "mathematics"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈpɹɪm.ɪ.tɪv ɹɪ.ˈkɜː.ʃən\\"
    },
    {
      "ipa": "\\-ʒən\\"
    }
  ],
  "word": "primitive recursion"
}

{
  "categories": [
    "Dates manquantes en anglais",
    "Locutions nominales en anglais",
    "anglais"
  ],
  "etymology_texts": [
    " ",
    "(Date à préciser) → voir primitive et recursion"
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        "Lexique en anglais des mathématiques",
        "Noms indénombrables en anglais",
        "Wiktionnaire:Exemples manquants en anglais"
      ],
      "glosses": [
        "Récursion primitive."
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "mathematics"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈpɹɪm.ɪ.tɪv ɹɪ.ˈkɜː.ʃən\\"
    },
    {
      "ipa": "\\-ʒən\\"
    }
  ],
  "word": "primitive recursion"
}