kymograph
noun
ky·mo·graph ˈkī-mə-ˌgraf 
: a device which graphically records motion or pressure (as of blood)
kymographic
ˌkī-mə-ˈgra-fik
adjective kymography
kī-ˈmä-grə-fē
noun 
Word History
Etymology
Greek kyma wave + International Scientific Vocabulary -graph — more at cyme
First Known Use
1872, in the meaning defined above
Medical Definition
kymograph
noun
ky·mo·graph -ˌgraf
: a device which graphically records motion or pressure
especially : a recording device including an electric motor or clockwork that drives a usually slowly revolving drum which carries a roll of plain or smoked paper and also having an arrangement for tracing on the paper by means of a stylus a graphic record of motion or pressure (as of the organs of speech, blood pressure, or respiration) often in relation to particular intervals of time