Os"cil*lo*graph (?), n. [L. oscillare to swing + -graph.] (Elec.)
An apparatus for recording or indicating alternating-current wave forms or other electrical oscillations, usually consisting of a galvanometer with strong field, in which the mass of the moving part is very small and frequency of vibration very high. -- Os`cil*lo*graph"ic (#), a.
© Webster 1913