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Definition of Phrenograph
1. n. An instrument for registering the movements of the diaphragm, or midriff, in respiration.
Definition of Phrenograph
1. Noun. (physiology) An instrument for registering the movements of the diaphragm, or midriff, in respiration. ¹
¹ Source: wiktionary.com
Medical Definition of Phrenograph
1.