"yoctosecond" meaning in English

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      "expansion": "yocto- + second",
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  "etymology_text": "yocto- + second",
  "forms": [
    {
      "form": "yoctoseconds",
      "tags": [
        "plural"
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    }
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  "lang_code": "en",
  "pos": "noun",
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      ],
      "glosses": [
        "An SI unit of time equal to 10⁻²⁴ seconds. Symbol: ys"
      ],
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          "metrology",
          "metrology"
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          "time",
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          "ys",
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        "(metrology) An SI unit of time equal to 10⁻²⁴ seconds. Symbol: ys"
      ],
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        {
          "word": "ys"
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      "topics": [
        "metrology"
      ]
    }
  ],
  "word": "yoctosecond"
}

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        "2": "yocto",
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      "expansion": "yocto- + second",
      "name": "prefix"
    }
  ],
  "etymology_text": "yocto- + second",
  "forms": [
    {
      "form": "yoctoseconds",
      "tags": [
        "plural"
      ]
    }
  ],
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      "expansion": "yoctosecond (plural yoctoseconds)",
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  "pos": "noun",
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        "(metrology) An SI unit of time equal to 10⁻²⁴ seconds. Symbol: ys"
      ],
      "topics": [
        "metrology"
      ]
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  ],
  "synonyms": [
    {
      "word": "ys"
    }
  ],
  "word": "yoctosecond"
}