"prompt neutron" meaning in English

{
  "forms": [
    {
      "form": "prompt neutrons",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "prompt neutron (plural prompt neutrons)",
      "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": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
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          "source": "w"
        },
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          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Nuclear physics",
          "orig": "en:Nuclear physics",
          "parents": [
            "Physics",
            "Quantum mechanics",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Radioactivity",
          "orig": "en:Radioactivity",
          "parents": [
            "Nuclear physics",
            "Radiation",
            "Physics",
            "Quantum mechanics",
            "Energy",
            "Sciences",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "coordinate_terms": [
        {
          "word": "delayed neutron"
        }
      ],
      "glosses": [
        "A neutron produced immediately by the fission of an atomic nucleus, instead of being emitted by decaying fission products seconds to minutes later; over 99% of all fission neutrons are prompt neutrons (the exact proportion depends on the nuclide undergoing fission)."
      ],
      "id": "en-prompt_neutron-en-noun-gseDvBkz",
      "links": [
        [
          "nuclear physics",
          "nuclear physics"
        ],
        [
          "neutron",
          "neutron"
        ],
        [
          "fission",
          "fission"
        ],
        [
          "atomic nucleus",
          "atomic nucleus"
        ],
        [
          "decay",
          "decay"
        ],
        [
          "fission product",
          "fission product"
        ],
        [
          "nuclide",
          "nuclide"
        ]
      ],
      "qualifier": "nuclear physics",
      "raw_glosses": [
        "(nuclear physics) A neutron produced immediately by the fission of an atomic nucleus, instead of being emitted by decaying fission products seconds to minutes later; over 99% of all fission neutrons are prompt neutrons (the exact proportion depends on the nuclide undergoing fission)."
      ],
      "wikipedia": [
        "prompt neutron"
      ]
    }
  ],
  "word": "prompt neutron"
}

{
  "coordinate_terms": [
    {
      "word": "delayed neutron"
    }
  ],
  "forms": [
    {
      "form": "prompt neutrons",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "prompt neutron (plural prompt neutrons)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "en:Nuclear physics",
        "en:Radioactivity"
      ],
      "glosses": [
        "A neutron produced immediately by the fission of an atomic nucleus, instead of being emitted by decaying fission products seconds to minutes later; over 99% of all fission neutrons are prompt neutrons (the exact proportion depends on the nuclide undergoing fission)."
      ],
      "links": [
        [
          "nuclear physics",
          "nuclear physics"
        ],
        [
          "neutron",
          "neutron"
        ],
        [
          "fission",
          "fission"
        ],
        [
          "atomic nucleus",
          "atomic nucleus"
        ],
        [
          "decay",
          "decay"
        ],
        [
          "fission product",
          "fission product"
        ],
        [
          "nuclide",
          "nuclide"
        ]
      ],
      "qualifier": "nuclear physics",
      "raw_glosses": [
        "(nuclear physics) A neutron produced immediately by the fission of an atomic nucleus, instead of being emitted by decaying fission products seconds to minutes later; over 99% of all fission neutrons are prompt neutrons (the exact proportion depends on the nuclide undergoing fission)."
      ],
      "wikipedia": [
        "prompt neutron"
      ]
    }
  ],
  "word": "prompt neutron"
}