phrenograph noun2 •An instrument for registering the movements of the diaphragm, or midriff, in respiration.Without varying the adjustment of the phrenograph take a tracing while repeatedly interrupting the respiration by holding the nostrils. What does the phrenogram show? — 1904 •A phrenological profile; a delineation of a person's characteristics based on a phrenological examination.Selina Campbell, who was the one who ordered the phrenograph in the first place, almost certainly read it in a different light. — 2002 formsphrenographs
