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
plethysmographicplay \-ˌthiz-mə-ˈgra-fik\ adjective
plethysmographicallyplay \-fi-k(ə-)lē\ adverb
plethysmographyplay \ˌple-thiz-ˈmä-grə-fē\ noun
Recent Examples of plethysmograph from the Web
Offenders could be required to submit to plethysmograph testing, in which sensors are attached to their penis, in an effort to find out whether they were aroused by deviant imagery and sounds.
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Origin and Etymology of plethysmograph
International Scientific Vocabulary, from Greek plēthysmos increase, from plēthynein to increase, from plēthys mass, quantity, from plēthein
First Known Use: 1872See Words from the same year
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
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