\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.