"Kingman's formula" meaning in English

{
  "etymology_text": "First published by John Kingman in his 1961 paper The single server queue in heavy traffic.",
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      "args": {},
      "expansion": "Kingman's formula",
      "name": "en-prop"
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
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      "glosses": [
        "An approximation for the mean waiting time in a G/G/1 queue."
      ],
      "id": "en-Kingman's_formula-en-name-UnnrkJwd",
      "links": [
        [
          "approximation",
          "approximation"
        ],
        [
          "mean",
          "mean"
        ],
        [
          "wait",
          "wait"
        ],
        [
          "time",
          "time"
        ]
      ],
      "qualifier": "queueing theory",
      "raw_glosses": [
        "(queueing theory) An approximation for the mean waiting time in a G/G/1 queue."
      ]
    }
  ],
  "word": "Kingman's formula"
}

{
  "etymology_text": "First published by John Kingman in his 1961 paper The single server queue in heavy traffic.",
  "head_templates": [
    {
      "args": {},
      "expansion": "Kingman's formula",
      "name": "en-prop"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English proper nouns",
        "English terms with non-redundant non-automated sortkeys",
        "English uncountable nouns"
      ],
      "glosses": [
        "An approximation for the mean waiting time in a G/G/1 queue."
      ],
      "links": [
        [
          "approximation",
          "approximation"
        ],
        [
          "mean",
          "mean"
        ],
        [
          "wait",
          "wait"
        ],
        [
          "time",
          "time"
        ]
      ],
      "qualifier": "queueing theory",
      "raw_glosses": [
        "(queueing theory) An approximation for the mean waiting time in a G/G/1 queue."
      ]
    }
  ],
  "word": "Kingman's formula"
}