"volatility decay" meaning in English

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      "form": "volatility decays",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "Synonym of volatility drag"
      ],
      "id": "en-volatility_decay-en-noun-jxNOUVQ1",
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          "volatility drag#English"
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          "word": "volatility drag"
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  "word": "volatility decay"
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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "Synonym of volatility drag"
      ],
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      "synonyms": [
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          "word": "volatility drag"
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  "word": "volatility decay"
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