plethysmograph
English
Etymology
Late 19th century: from Ancient Greek πληθυσμός (plēthusmós, “enlargement”) + -graph.
Pronunciation
- (US) IPA(key): /plɛˈðɪz.məˌɡɹæf/, /pləˈðɪz.məˌɡɹæf/
Noun
plethysmograph (plural plethysmographs)
- (medicine) An instrument for measuring changes in volume within an organ or whole body (usually via fluctuations in the amount of fluid it contains).