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plethysmograph

[ pluh-thiz-muh-graf, -grahf ]
/ pləˈθɪz məˌgræf, -ˌgrɑf /
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noun
a device for measuring and recording changes in the volume of the body or of a body part or organ.
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Origin of plethysmograph

First recorded in 1870–75; from Greek plēthysm(ós) “increase, multiplication” (plēthý(nein) “to increase,” derivative of plêthos “large number, crowd” + -smos, variant of -mos noun suffix) + -o- + -graph; first coined in Italian as pletismografo

OTHER WORDS FROM plethysmograph

ple·thys·mo·graph·ic [pluh-thiz-muh-graf-ik], /pləˌθɪz məˈgræf ɪk/, adjectivepleth·ys·mog·ra·phy [pleth-iz-mog-ruh-fee], /ˌplɛθ ɪzˈmɒg rə fi/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use plethysmograph in a sentence

  • I think the experimental psychologists called the thing a "plethysmograph."

    The Silent Bullet|Arthur B. Reeve
  • These instruments are the plethysmograph and the hydrosphygmograph.

    Criminal Man|Gina Lombroso-Ferrero

British Dictionary definitions for plethysmograph

plethysmograph
/ (pləˈθɪzməˌɡrɑːf, -ˌɡræf, -ˈθɪs-) /

noun
a device for measuring the fluctuations in volume of a bodily organ or part, such as those caused by variations in the amount of blood it contains

Word Origin for plethysmograph

C19: from Greek plēthusmos enlargement + graphein to write
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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