ATMOGRAPH
\ˈatməɡɹˌaf], \ˈatməɡɹˌaf], \ˈa_t_m_ə_ɡ_ɹ_ˌa_f]\
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Instrument for recording respiratory movements.
By Willam Alexander Newman Dorland
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An instrument for registering the movement of the chest in respiration. [Gr.]
By Smith Ely Jelliffe