Measuring the fullness of a hollow organ or vessel, as of the pulse. ... Origin: G. Plethysmos, increase, + metron, measure ... (05 Mar 2000) ... 
Type: Term Pronunciation: pleth-iz-mom′ĕ-trē Definitions: 1. Measuring the fullness of a hollow organ or vessel, as of the pulse.
plethysmometry Measurement of the fullness of a hollow organ.