pneumograph

[noo-muh-graf, -grahf, nyoo-]
noun Medicine/Medical.
a device for recording graphically the respiratory movements of the thorax.


Origin:
1875–80; pneumo- + -graph

pneumographic [noo-muh-graf-ik, nyoo-] , adjective
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World English Dictionary
pneumograph (ˈnjuːməˌɡrɑːf, -ˌɡræf)
 
n
med an instrument for making a record (pneumogram) of respiratory movements

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Example sentences
Frequency and amplitude of respiration were determined in three test persons with the aid of the usual pneumograph.
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