plethysmograph

[ pluh-thiz-muh-graf, -grahf ]

noun

1. a device for measuring and recording changes in the volume of the body or of a body part or organ.

plethysmograph

/ -ˌɡræf; pləˈθɪzməˌɡrɑːf; -ˈθɪs- /

noun

1. 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

Other Words From

• ple·thys·mo·graph·ic [pl, uh, -thiz-m, uh, -, graf, -ik], adjective
• pleth·ys·mog·ra·phy [pleth-iz-, mog, -r, uh, -fee], noun

Word History and Origins

Origin of plethysmograph¹

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

Word History and Origins

Origin of plethysmograph¹

C19: from Greek plēthusmos enlargement + graphein to write

Example Sentences

Strapped to their type of plethysmograph, they responded in predictable patterns she labelled "category specific".

From The Guardian

If this proved to be true, what would it mean for all these plethysmograph studies?

From Salon

Researchers at the Chicago foundation asked men attached to a plethysmograph, a device measuring changes in volume in various parts of the body, to sniff 30 odors.

From New York Times

"That is my new plethysmograph," remarked Gaines, noting with some satisfaction how Kennedy had singled it out.

From Project Gutenberg

Besides, I had read articles about the chronoscope, the plethysmograph, the sphygmograph, and others of the new psychological instruments.

From Project Gutenberg