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

1875–80; pneumo- + -graph

pneumographic [noo-muh-graf-ik, nyoo-] , adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
pneumograph (ˈnjuːməˌɡrɑːf, -ˌɡræf)
med an instrument for making a record (pneumogram) of respiratory movements

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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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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