Source : Webster's Revised Unabridged Dictionary (1913)

Cymograph \Cy"mo*graph\, n. [Cyma + -graph.]
   (a) An instrument for making tracings of the outline or
       contour of profiles, moldings, etc.
   (b) Var. of {Kymograph}. -- {Cy`mo*graph"ic}, a.

Cymograph \Cy"mo*graph\, v. t.
   To trace or copy with a cymograph.

Source : WordNet®

cymograph
     n : scientific instrument consisting of a rotating drum holding
         paper on which a stylus traces a continuous record (as of
         breathing or blood pressure) [syn: {kymograph}]