"beta decay" meaning in English

{
  "forms": [
    {
      "form": "beta decays",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "beta decay (countable and uncountable, plural beta decays)",
      "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": "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"
        }
      ],
      "glosses": [
        "A nuclear reaction in which a beta particle (electron or positron) is emitted."
      ],
      "id": "en-beta_decay-en-noun-6y1iCkY0",
      "links": [
        [
          "nuclear physics",
          "nuclear physics"
        ],
        [
          "nuclear reaction",
          "nuclear reaction"
        ],
        [
          "beta particle",
          "beta particle"
        ],
        [
          "electron",
          "electron"
        ],
        [
          "positron",
          "positron"
        ]
      ],
      "qualifier": "nuclear physics",
      "raw_glosses": [
        "(nuclear physics) A nuclear reaction in which a beta particle (electron or positron) is emitted."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "nuclear reaction",
          "word": "beetahajoaminen"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "beta-raspad",
          "sense": "nuclear reaction",
          "tags": [
            "masculine"
          ],
          "word": "бета-распад"
        },
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "nuclear reaction",
          "tags": [
            "neuter"
          ],
          "word": "betasönderfall"
        }
      ],
      "wikipedia": [
        "beta decay"
      ]
    }
  ],
  "word": "beta decay"
}

{
  "forms": [
    {
      "form": "beta decays",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "beta decay (countable and uncountable, plural beta decays)",
      "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",
        "English uncountable nouns",
        "en:Nuclear physics",
        "en:Radioactivity"
      ],
      "glosses": [
        "A nuclear reaction in which a beta particle (electron or positron) is emitted."
      ],
      "links": [
        [
          "nuclear physics",
          "nuclear physics"
        ],
        [
          "nuclear reaction",
          "nuclear reaction"
        ],
        [
          "beta particle",
          "beta particle"
        ],
        [
          "electron",
          "electron"
        ],
        [
          "positron",
          "positron"
        ]
      ],
      "qualifier": "nuclear physics",
      "raw_glosses": [
        "(nuclear physics) A nuclear reaction in which a beta particle (electron or positron) is emitted."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "wikipedia": [
        "beta decay"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "nuclear reaction",
      "word": "beetahajoaminen"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "beta-raspad",
      "sense": "nuclear reaction",
      "tags": [
        "masculine"
      ],
      "word": "бета-распад"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "nuclear reaction",
      "tags": [
        "neuter"
      ],
      "word": "betasönderfall"
    }
  ],
  "word": "beta decay"
}