plethysmograph

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English[edit]

Etymology[edit]

Late 19th century: from Greek plēthusmos ‘enlargement’ (based on plēthus ‘fullness’) + -graph.

Noun[edit]

plethysmograph (plural plethysmographs)

  1. (medicine) An instrument for measuring changes in volume within an organ or whole body (usually via fluctuations in the amount of fluid it contains).

Derived terms[edit]