plethysmograph
English Thesaurus
1. 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) (noun.artifact)
| hyponym | : | body plethysmograph, |
| definition | : | plethysmograph consisting of a chamber surrounding the entire body; used in studies of respiration (noun.artifact) |
| hyponym | : | digital plethysmograph, |
| definition | : | plethysmograph applied to a digit of the hand or foot to measure skin blood flow (noun.artifact) |
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