"Koch's postulate" meaning in English

{
  "etymology_text": "Formulated by Robert Koch and Friedrich Loeffler in 1884.",
  "forms": [
    {
      "form": "Koch's postulates",
      "tags": [
        "plural"
      ]
    }
  ],
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      "expansion": "Koch's postulate (plural Koch's postulates)",
      "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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            "Entries with incorrect language header",
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      "glosses": [
        "Any of four criteria designed to establish a causative relationship between a microbe and a disease: (i) the microorganism must be found in abundance in all organisms suffering from the disease, but should not be found in healthy organisms; (ii) it must be isolated from a diseased organism and grown in pure culture; (iii) the cultured microorganism should cause disease when introduced into a healthy organism; (iv) the microorganism must be reisolated from the inoculated, diseased experimental host and identified as being identical to the original specific causative agent."
      ],
      "id": "en-Koch's_postulate-en-noun-VennCF~q",
      "wikipedia": [
        "Koch's postulates"
      ]
    }
  ],
  "word": "Koch's postulate"
}

{
  "etymology_text": "Formulated by Robert Koch and Friedrich Loeffler in 1884.",
  "forms": [
    {
      "form": "Koch's postulates",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Koch's postulate (plural Koch's postulates)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys"
      ],
      "glosses": [
        "Any of four criteria designed to establish a causative relationship between a microbe and a disease: (i) the microorganism must be found in abundance in all organisms suffering from the disease, but should not be found in healthy organisms; (ii) it must be isolated from a diseased organism and grown in pure culture; (iii) the cultured microorganism should cause disease when introduced into a healthy organism; (iv) the microorganism must be reisolated from the inoculated, diseased experimental host and identified as being identical to the original specific causative agent."
      ],
      "wikipedia": [
        "Koch's postulates"
      ]
    }
  ],
  "word": "Koch's postulate"
}