Meaning of plethysmograph

ple•thys•mo•graph

Pronunciation: (plu-thiz'mu-graf", -gräf"), [key]
— n.
  1. a device for measuring and recording changes in the volume of the body or of a body part or organ.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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