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Webster 1913 Edition

Noun.

[Gr. [GREEK] wave +

-graph

(Physiol.)

An instrument for measuring, and recording graphically, the pressure of the blood in any of the blood vessels of a living animal; – called also

kymographion

kymograph ‎(plural kymographs)

A device that gives a graphical representation of a variation in a phenomenon such as blood pressure over time, using a pen on a rotating drum.