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Webster 1913 Edition
Plethysmograph
‖
Pleth′ys-mo-graph
,Noun.
[Gr. [GREEK] an enlargement +
-graph
.] (Physiol.)
An instrument for determining and registering the variations in the size or volume of a limb, as the arm or leg, and hence the variations in the amount of blood in the limb.
– Plethˊys-mo-graph′ic
(#)
, Adj.