plethysmograph

(redirected from plethysmographically)
Also found in: Dictionary, Thesaurus, Medical.
Related to plethysmographically: arterial plethysmography, venous plethysmography

plethysmograph

[plə′thiz·mə‚graf]
(medicine)
An instrument for measuring changes in the size of a part of the body by measuring changes in the amount of blood in that part.