"nanohertz" meaning in English

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      "expansion": "nano- + hertz",
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  "etymology_text": "From nano- + hertz.",
  "forms": [
    {
      "form": "nanohertz",
      "tags": [
        "plural"
      ]
    }
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      "expansion": "nanohertz (plural nanohertz)",
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  "lang_code": "en",
  "pos": "noun",
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      ],
      "glosses": [
        "A unit of frequency equal to one thousand-millionth (10⁻⁹) of a hertz, about once every 32 years"
      ],
      "id": "en-nanohertz-en-noun-BbHh~gDy",
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          "physics",
          "physics"
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          "unit",
          "unit"
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        [
          "frequency",
          "frequency"
        ],
        [
          "thousand",
          "thousand"
        ],
        [
          "millionth",
          "millionth"
        ],
        [
          "hertz",
          "hertz"
        ]
      ],
      "raw_glosses": [
        "(physics) A unit of frequency equal to one thousand-millionth (10⁻⁹) of a hertz, about once every 32 years"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "nanohertz"
}

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        "2": "nano",
        "3": "hertz"
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      "expansion": "nano- + hertz",
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    }
  ],
  "etymology_text": "From nano- + hertz.",
  "forms": [
    {
      "form": "nanohertz",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A unit of frequency equal to one thousand-millionth (10⁻⁹) of a hertz, about once every 32 years"
      ],
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          "physics",
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          "hertz",
          "hertz"
        ]
      ],
      "raw_glosses": [
        "(physics) A unit of frequency equal to one thousand-millionth (10⁻⁹) of a hertz, about once every 32 years"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "nanohertz"
}