"decay constant" meaning in English

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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "In a radioactive material, an atom's probability, per unit time, of decaying; it is related to half-life by the equation t_1/2=(ln 2)/λ, where t_1/2 is the half-life, and λ is the decay constant."
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      "id": "en-decay_constant-en-noun-oEEvuG6o",
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          "radioactive",
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        [
          "half-life",
          "half-life"
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  "word": "decay constant"
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        "In a radioactive material, an atom's probability, per unit time, of decaying; it is related to half-life by the equation t_1/2=(ln 2)/λ, where t_1/2 is the half-life, and λ is the decay constant."
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