plethysmogramn.
/plᵻˈθɪzməɡram/, U.S. /pləˈθɪzməˌɡræm/ Physiology.
A record of changes in bodily volume, produced by a plethysmograph.
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the world > life > biology > laboratory analysis > measure > [noun] > record or graph
plethysmogram1894
population pyramid1927
survival curve1936
Scatchard plot1958
zeugmatogram1973
1894 W. Ewart Heart Stud. I. iv. Introd. 181 The need for a separate study of shape, volume, and velocity of the pulse is rendered obvious by the differences between the three curves, which may be termed respectively the sphygmogram, the plethysmogram, and the tachogram, obtained by means of the three instruments bearing corresponding names.
1929 Proc. Soc. Exper. Biol. & Med. 1928–9 26 711 (heading) A photographic method of recording plethysmograms.
1994 Cosmetics & Toiletries (Nexis) Oct. 83 The recording of digital plethysmograms can be used as a measure of stress.
This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).
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n.1894