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WORDNET DICTIONARY
CIDE DICTIONARY
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WORDNET DICTIONARY
Noun plethysmograph has 1 sense
- plethysmograph(n = noun.artifact) - a measuring instrument for measuring changes in volume of a part or organ or whole body (usually resulting from fluctuations in the amount of blood it contains); has particulars: body plethysmograph, digital plethysmograph
is a kind of measuring device, measuring instrument, measuring system
CIDE DICTIONARY
plethysmograph, n. [Gr. an enlargement + -graph.].
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. [1913 Webster]