Associations to the word «Plethysmograph»
Noun
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Wiktionary
PLETHYSMOGRAPH, noun. (medicine) An instrument for measuring changes in volume within an organ or whole body (usually via fluctuations in the amount of fluid it contains).
Dictionary definition
PLETHYSMOGRAPH, noun. A measuring instrument for measuring changes in volume of a part or organ or whole body (usually resulting from fluctuations in the amount of blood it contains).
Wise words
It is only with the heart that one can see rightly; what is
essential is invisible to the eye.