Plethysmograph
volume
British pronunciation/plˈɛθɪsmˌɒɡɹaf/
American pronunciation/plˈɛθɪsmˌɑːɡɹæf/

Definition & Meaning of "plethysmograph"

Plethysmograph
01

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)

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