capnograph

noun

cap·​no·​graph ˈkap-nō-ˌgraf How to pronounce capnograph (audio)
: a monitoring device that measures the concentration of carbon dioxide in exhaled air and displays a numerical readout and waveform tracing compare capnometer
capnographic
ˌkap-nō-ˈgra-fik How to pronounce capnograph (audio)
adjective
capnographic monitoring
capnography
kap-ˈnä-grə-fē How to pronounce capnograph (audio)
noun

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

Rhymes for capnograph

See All Rhymes for capnograph

Browse Nearby Words

Capnodium
capnograph
capnometer
See all Nearby Words

Cite this Entry

“Capnograph.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/capnograph. Accessed 4 Nov. 2025.

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Medical Definition

capnograph

noun
cap·​no·​graph ˈkap-nō-ˌgraf How to pronounce capnograph (audio)
: a monitoring device that measures the concentration of carbon dioxide in exhaled air and displays a numerical readout and waveform tracing compare capnometer
capnographic
ˌkap-nō-ˈgraf-ik How to pronounce capnograph (audio)
adjective
capnography
kap-ˈnäg-rə-fē How to pronounce capnograph (audio)
noun
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