"mK" meaning in All languages combined

{
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      "expansion": "mK",
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  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "symbol",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "an SI unit of thermodynamic temperature equal to 10⁻³ kelvins",
          "word": "millikelvin"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
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        },
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          "parents": [
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          "kind": "topical",
          "langcode": "mul",
          "name": "Metrology",
          "orig": "mul:Metrology",
          "parents": [
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            "Sciences",
            "All topics",
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          "source": "w"
        }
      ],
      "glosses": [
        "Symbol for millikelvin, an SI unit of thermodynamic temperature equal to 10⁻³ kelvins."
      ],
      "id": "en-mK-mul-symbol-3p97P~Fi",
      "links": [
        [
          "metrology",
          "metrology"
        ],
        [
          "millikelvin",
          "millikelvin"
        ],
        [
          "thermodynamic temperature",
          "thermodynamic temperature"
        ],
        [
          "kelvin",
          "kelvin"
        ]
      ],
      "raw_glosses": [
        "(metrology) Symbol for millikelvin, an SI unit of thermodynamic temperature equal to 10⁻³ kelvins."
      ],
      "tags": [
        "alt-of",
        "symbol"
      ],
      "topics": [
        "metrology"
      ]
    }
  ],
  "word": "mK"
}

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  "lang_code": "mul",
  "pos": "symbol",
  "senses": [
    {
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          "extra": "an SI unit of thermodynamic temperature equal to 10⁻³ kelvins",
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        }
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      ],
      "glosses": [
        "Symbol for millikelvin, an SI unit of thermodynamic temperature equal to 10⁻³ kelvins."
      ],
      "links": [
        [
          "metrology",
          "metrology"
        ],
        [
          "millikelvin",
          "millikelvin"
        ],
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          "thermodynamic temperature"
        ],
        [
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        ]
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        "(metrology) Symbol for millikelvin, an SI unit of thermodynamic temperature equal to 10⁻³ kelvins."
      ],
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        "alt-of",
        "symbol"
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      "topics": [
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  ],
  "word": "mK"
}