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From the Ancient Greek roots πυκνός ‎(puknós, dense) and μέτρον ‎(métron, measure).


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pycnometer ‎(plural pycnometers)

  1. (physics) A vessel used to determine the specific gravity of a liquid; a specific gravity bottle.
    • 2006 December 8th, David Biello, “Fact or Fiction?: Archimedes Coined the Term ‘Eureka!’ in the Bath” in Scientific American:
      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.

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