plethysmometer

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noun

Any instrument designed to measure small changes in volume, usually via the displacement of water

OriginAncient Greek πληθυσμός →
Scrabble 26
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Meanings

nounplethysmometer (plural plethysmometers)

plural plethysmometers

  1. Any instrument designed to measure small changes in volume, usually via the displacement of water

Origin

  1. Ancient Greekπληθυσμός“increase”
  2. Englishplethysmometer

From Ancient Greek πληθυσμός (plēthusmós, “increase”) + -meter.

More words from Ancient Greek

Full word history & related roots →
Cite this entry
APA

plethysmometer. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/plethysmometer

MLA

“plethysmometer.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/plethysmometer. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “plethysmometer,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/plethysmometer.

Source: plethysmometer on Wiktionary, CC BY-SA 4.0.