"caesium clock" meaning in English

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  "lang_code": "en",
  "pos": "noun",
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          "name": "Measuring instruments",
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      "glosses": [
        "A type of highly accurate atomic clock that is regulated by a resonance frequency of caesium atoms (the same frequency, 9,192,631,770 Hz, on which the precise scientific definition of the second is based)."
      ],
      "id": "en-caesium_clock-en-noun-5rPdL6UM",
      "links": [
        [
          "atomic clock",
          "atomic clock"
        ],
        [
          "caesium",
          "caesium"
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      ],
      "synonyms": [
        {
          "word": "cesium clock"
        }
      ]
    }
  ],
  "word": "caesium clock"
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        "A type of highly accurate atomic clock that is regulated by a resonance frequency of caesium atoms (the same frequency, 9,192,631,770 Hz, on which the precise scientific definition of the second is based)."
      ],
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  "synonyms": [
    {
      "word": "cesium clock"
    }
  ],
  "word": "caesium clock"
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