The Collaborative International Dictionary
Pneumatograph
Pneumatograph \Pneu*mat"o*graph\, n. [Pneumato- + -graph.] (Physiol.) An instrument for recording the movements of the thorax or chest wall during respiration; -- also called stethograph.
Wiktionary
pneumatograph
n. An instrument for recording the movements of the thorax or chest wall during respiration.
Usage examples of "pneumatograph".
His bureau was frequented by paraphysicists and ectoplasmologists, builders of teleportation stations and of pneumatographs that made possible the opening of communications with the spirit world.