"Boltzmann's constant" meaning in English

{
  "etymology_text": "For Austrian physicist Ludwig Boltzmann.",
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  "lang_code": "en",
  "pos": "name",
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      "glosses": [
        "The physical constant relating energy at the particle level with temperature observed at the bulk level. It is the gas constant R divided by the Avogadro's number N_A:- k=R/(N_rm A),"
      ],
      "id": "en-Boltzmann's_constant-en-name-vQyUYz2a",
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          "physics",
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        [
          "physical constant",
          "physical constant"
        ],
        [
          "energy",
          "energy"
        ],
        [
          "temperature",
          "temperature"
        ],
        [
          "gas constant",
          "gas constant"
        ],
        [
          "Avogadro's number",
          "Avogadro's number"
        ]
      ],
      "raw_glosses": [
        "(physics) The physical constant relating energy at the particle level with temperature observed at the bulk level. It is the gas constant R divided by the Avogadro's number N_A:- k=R/(N_rm A),"
      ],
      "synonyms": [
        {
          "word": "Boltzmann constant"
        }
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ],
      "wikipedia": [
        "Boltzmann's constant",
        "Ludwig Boltzmann"
      ]
    }
  ],
  "word": "Boltzmann's constant"
}

{
  "etymology_text": "For Austrian physicist Ludwig Boltzmann.",
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      "expansion": "Boltzmann's constant",
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  "lang_code": "en",
  "pos": "name",
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        "en:Physical constants",
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      ],
      "glosses": [
        "The physical constant relating energy at the particle level with temperature observed at the bulk level. It is the gas constant R divided by the Avogadro's number N_A:- k=R/(N_rm A),"
      ],
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "physical constant",
          "physical constant"
        ],
        [
          "energy",
          "energy"
        ],
        [
          "temperature",
          "temperature"
        ],
        [
          "gas constant",
          "gas constant"
        ],
        [
          "Avogadro's number",
          "Avogadro's number"
        ]
      ],
      "raw_glosses": [
        "(physics) The physical constant relating energy at the particle level with temperature observed at the bulk level. It is the gas constant R divided by the Avogadro's number N_A:- k=R/(N_rm A),"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ],
      "wikipedia": [
        "Boltzmann's constant",
        "Ludwig Boltzmann"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "Boltzmann constant"
    }
  ],
  "word": "Boltzmann's constant"
}