[f. Gr. τρέμειν to tremble, quiver + -GRAM.] a. A tracing recording involuntary muscular motion. b. An irregularity characterizing a person’s handwriting: see quot. 1907. So Tremograph [-GRAPH], an instrument for recording involuntary muscular tremor.
1899. Syd. Soc. Lex., Tremogram, the tracing of tremor made by means of the Tremograph.
1904. G. S. Hall, Adolescence, I. iii. 145. The tremograph, a thimble attached to a pivoted lever moving freely in all directions, showed that children could not hold the index-finger still for half a minute.
1907. P. Frazer in Jrnl. Franklin Inst., April, 268. The curious marginal irregularities which accompany and seem to a certain degree to characterize the handwriting of each writer, which I have called ‘tremograms.’
