: a monitoring device that measures the concentration of carbon dioxide in exhaled air and displays a numerical readout and waveform tracing compare capnometer
capnographic adjective
capnographic monitoring

Word History

Etymology

Greek kapnós "smoke, steam" (of which carbon dioxide is a component) + -o- + -graph

First Known Use

1964, in the meaning defined above

Time Traveler
The first known use of capnograph was in 1964

Browse Nearby Words

Cite this Entry

“Capnograph.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/capnograph. Accessed 26 Mar. 2025.

Medical Definition

capnograph

noun
: a monitoring device that measures the concentration of carbon dioxide in exhaled air and displays a numerical readout and waveform tracing compare capnometer
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