plethor-, plethysmo-

(Greek: excess, superabundance, overly full, fullness; increase)

plethysmography (s) (noun)
Measuring and recording changes in the volume of the body or of a body part or organ.
plethysmometry (s), plethysmometries (pl) (nouns)
Measurement of the fullness of hollow organs or vessels; such as, with the pulse.

Inter-related cross references, directly or indirectly, involving word units meaning "more, plentiful, fullness, excessive, over flowing": copi-; exuber-; hyper-; multi-; opulen-; ple-; pleio-; poly-; super-; total-; ultra-; undu-.