First Known Use: 1872
Dictionary
plethysmograph
noun ple·thys·mo·graph \-ˌgraf\
Definition of PLETHYSMOGRAPH
: an instrument for determining and registering variations in the size of an organ, limb, or part resulting from changes in the amount of blood present or passing through it
— ple·thys·mo·graph·ic \-ˌthiz-mə-ˈgra-fik\ adjective
— ple·thys·mo·graph·i·cal·ly \-fi-k(ə-)lē\ adverb
— pleth·ys·mog·ra·phy \ˌple-thiz-ˈmä-grə-fē\ noun
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Origin of PLETHYSMOGRAPH
International Scientific Vocabulary, from Greek plēthysmos increase, from plēthynein to increase, from plēthys mass, quantity, from plēthein
Medical Dictionary
plethysmograph
noun ple·thys·mo·graph \-ˌgraf\
Medical Definition of PLETHYSMOGRAPH
: an instrument for determining and registering variations in the size of an organ or limb resulting from changes in the amount of blood present or passing through it
—ple·thys·mo·graph·ic \-ˌthiz-mə-ˈgraf-ik\ adjective
—ple·thys·mo·graph·i·cal·ly \-i-k(ə-)lē\ adverb
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