Seismograph

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Seismograph \Seis"mo*graph\, n. [Gr. ??? an earthquake +
     -graph.] (Physics)
     An apparatus for registering the shocks and undulatory
     motions of earthquakes.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  seismograph
       n : a measuring instrument for detecting and measuring the
           intensity and direction and duration of movements of the
           ground (as an earthquake)