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plethysmograph

DEFINITIONS OF: plethysmograph

1

n 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)

Types:
body plethysmograph
plethysmograph consisting of a chamber surrounding the entire body; used in studies of respiration
digital plethysmograph
plethysmograph applied to a digit of the hand or foot to measure skin blood flow
Type of:
measuring device, measuring instrument, measuring system
instrument that shows the extent or amount or quantity or degree of something
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