the GNU version of the Collaborative International Dictionary of English
n. A tracing, called a pulse tracing, consisting of a series of curves corresponding with the beats of the heart, obtained by the application of the sphygmograph.
The Century Dictionary and Cyclopedia
n. A tracing of the changes of tension at a point in an artery, as obtained with a sphyemograph.
Word Usage
"[9] I am much indebted to Mr.A. H. Garrod for having informed me of M. Lorain's work on the pulse, in which a sphygmogram of a woman in a rage is given; and this shows much difference in the rate and other characters from that of the same woman in her ordinary state."