plethysmograph

noun
ple·​thys·​mo·​graph | \ple-ˈthiz-mə-ˌgraf, plə-\

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

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Other Words from plethysmograph

plethysmographic \ ple-​ˌthiz-​mə-​ˈgra-​fik , plə-​ \ adjective
plethysmographically \ ple-​ˌthiz-​mə-​ˈgra-​fi-​k(ə-​)lē , plə-​ \ adverb
plethysmography \ ˌple-​thiz-​ˈmä-​grə-​fē , plə-​ \ noun

Examples of plethysmograph in a Sentence

Recent Examples on 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. Christopher N. Osher, The Denver Post, "Sex offenders see stringent parenting rules relaxed in Colorado, prompting debate over child safety," 5 Mar. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'plethysmograph.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of plethysmograph

1872, in the meaning defined above

History and Etymology for plethysmograph

International Scientific Vocabulary, from Greek plēthysmos increase, from plēthynein to increase, from plēthys mass, quantity, from plēthein

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Time Traveler for plethysmograph

The first known use of plethysmograph was in 1872

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More Definitions for plethysmograph

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

Other Words from plethysmograph

plethysmographic \ -​ˌthiz-​mə-​ˈgraf-​ik \ adjective
plethysmographically \ -​i-​k(ə-​)lē \ adverb

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