spirography
noun
spi·rog·ra·phy
spī-ˈräg-rə-fē 
plural spirographies
: the recording of respiratory movements by means of a spirograph
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“Spirography.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/spirography. Accessed 31 Oct. 2025.
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