"pycnometer" meaning in English

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  "etymology_text": "From Ancient Greek πυκνός (puknós, “dense”) and μέτρον (métron, “measure”). By surface analysis, pycno- + -meter.",
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    {
      "form": "pycnometers",
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  "lang_code": "en",
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          "name": "Measuring instruments",
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          "text": "As Galileo showed in his tract La Bilancetta, or “The Little Balance,” a scientist of Archimedes’ stature could have achieved a far more precise result using his own law of buoyancy and an accurate scale, something far more common in the ancient world than a very precise pycnometer, which is used to measure displacement.",
          "type": "quote"
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      "glosses": [
        "A vessel of precisely known volume used by weighing to determine the specific gravity or relative density of a liquid."
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          "vessel",
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        [
          "specific gravity",
          "specific gravity#English"
        ],
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          "relative density",
          "relative density"
        ],
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          "liquid",
          "liquid#English"
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        "(physics, metrology) A vessel of precisely known volume used by weighing to determine the specific gravity or relative density of a liquid."
      ],
      "related": [
        {
          "word": "pycnometric"
        },
        {
          "word": "pycnometry"
        }
      ],
      "synonyms": [
        {
          "word": "specific gravity bottle"
        }
      ],
      "topics": [
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        "natural-sciences",
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        {
          "code": "fr",
          "lang": "French",
          "sense": "vessel used to determine a liquid’s specific gravity",
          "tags": [
            "masculine"
          ],
          "word": "pycnomètre"
        },
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          "roman": "pyknómetro",
          "sense": "vessel used to determine a liquid’s specific gravity",
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          "word": "πυκνόμετρο"
        }
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    {
      "ipa": "/pɪkˈnɒmɪtə(ɹ)/"
    }
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  "word": "pycnometer"
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      "word": "pycnometric"
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      ],
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          "metrology",
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          "specific gravity",
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          "relative density",
          "relative density"
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        "(physics, metrology) A vessel of precisely known volume used by weighing to determine the specific gravity or relative density of a liquid."
      ],
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        }
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      "code": "fr",
      "lang": "French",
      "sense": "vessel used to determine a liquid’s specific gravity",
      "tags": [
        "masculine"
      ],
      "word": "pycnomètre"
    },
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      "code": "el",
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      "roman": "pyknómetro",
      "sense": "vessel used to determine a liquid’s specific gravity",
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      ],
      "word": "πυκνόμετρο"
    }
  ],
  "word": "pycnometer"
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