"alpha decay" meaning in English

{
  "forms": [
    {
      "form": "alpha decays",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "alpha decay (plural alpha 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": "other",
          "name": "Mandarin terms with redundant transliterations",
          "parents": [
            "Terms with redundant transliterations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Helium",
          "orig": "en:Helium",
          "parents": [
            "Noble gases",
            "Chemical elements",
            "Gases",
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Physics",
          "orig": "en:Physics",
          "parents": [
            "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": [
        "Radioactive decay by emitting an alpha particle."
      ],
      "id": "en-alpha_decay-en-noun-tsPbhx0p",
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "Radioactive",
          "radioactive"
        ],
        [
          "decay",
          "decay"
        ],
        [
          "alpha particle",
          "alpha particle"
        ]
      ],
      "raw_glosses": [
        "(physics) Radioactive decay by emitting an alpha particle."
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ],
      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "radioactive decay by emitting an alpha particle",
          "word": "阿爾法衰變"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "ā'ěrfǎ shuāibiàn",
          "sense": "radioactive decay by emitting an alpha particle",
          "word": "阿尔法衰变"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "radioactive decay by emitting an alpha particle",
          "word": "α衰變"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "ā'ěrfā shuāibiàn",
          "sense": "radioactive decay by emitting an alpha particle",
          "word": "α衰变"
        },
        {
          "code": "et",
          "lang": "Estonian",
          "sense": "radioactive decay by emitting an alpha particle",
          "word": "alfalagunemine"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "radioactive decay by emitting an alpha particle",
          "word": "alfahajoaminen"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "radioactive decay by emitting an alpha particle",
          "tags": [
            "masculine"
          ],
          "word": "Alphazerfall"
        },
        {
          "code": "is",
          "lang": "Icelandic",
          "sense": "radioactive decay by emitting an alpha particle",
          "tags": [
            "feminine"
          ],
          "word": "alfasundrun"
        },
        {
          "code": "is",
          "lang": "Icelandic",
          "sense": "radioactive decay by emitting an alpha particle",
          "tags": [
            "feminine"
          ],
          "word": "alfahrörnun"
        },
        {
          "code": "pt",
          "lang": "Portuguese",
          "sense": "radioactive decay by emitting an alpha particle",
          "tags": [
            "masculine"
          ],
          "word": "decaimento alfa"
        }
      ]
    }
  ],
  "word": "alpha decay"
}

{
  "forms": [
    {
      "form": "alpha decays",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "alpha decay (plural alpha 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",
        "Mandarin terms with redundant transliterations",
        "en:Helium",
        "en:Physics",
        "en:Radioactivity"
      ],
      "glosses": [
        "Radioactive decay by emitting an alpha particle."
      ],
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "Radioactive",
          "radioactive"
        ],
        [
          "decay",
          "decay"
        ],
        [
          "alpha particle",
          "alpha particle"
        ]
      ],
      "raw_glosses": [
        "(physics) Radioactive decay by emitting an alpha particle."
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "radioactive decay by emitting an alpha particle",
      "word": "阿爾法衰變"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "ā'ěrfǎ shuāibiàn",
      "sense": "radioactive decay by emitting an alpha particle",
      "word": "阿尔法衰变"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "radioactive decay by emitting an alpha particle",
      "word": "α衰變"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "ā'ěrfā shuāibiàn",
      "sense": "radioactive decay by emitting an alpha particle",
      "word": "α衰变"
    },
    {
      "code": "et",
      "lang": "Estonian",
      "sense": "radioactive decay by emitting an alpha particle",
      "word": "alfalagunemine"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "radioactive decay by emitting an alpha particle",
      "word": "alfahajoaminen"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "radioactive decay by emitting an alpha particle",
      "tags": [
        "masculine"
      ],
      "word": "Alphazerfall"
    },
    {
      "code": "is",
      "lang": "Icelandic",
      "sense": "radioactive decay by emitting an alpha particle",
      "tags": [
        "feminine"
      ],
      "word": "alfasundrun"
    },
    {
      "code": "is",
      "lang": "Icelandic",
      "sense": "radioactive decay by emitting an alpha particle",
      "tags": [
        "feminine"
      ],
      "word": "alfahrörnun"
    },
    {
      "code": "pt",
      "lang": "Portuguese",
      "sense": "radioactive decay by emitting an alpha particle",
      "tags": [
        "masculine"
      ],
      "word": "decaimento alfa"
    }
  ],
  "word": "alpha decay"
}