Found 2 items, similar to seismograph.
English → English (WordNet) Definition: seismograph seismograph n : a measuring instrument for detecting and measuring the intensity and direction and duration of movements of the ground (as an earthquake)
English → English (gcide) Definition: Seismograph Seismograph \Seis"mo*graph\, n. [Gr. ??? an earthquake + -graph.] (Physics) An apparatus for registering the shocks and undulatory motions of earthquakes. [1913 Webster]