Seismic

2 definitions found

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

  Seismic \Seis"mic\, Seismal \Seis"mal\, a. [Gr. seismo`s an
     earthquake, from sei`ein to shake.]
     Of or pertaining to an earthquake; caused by an earthquake.
     [1913 Webster]
  
     {Seismic vertical}, the point upon the earth's surface


        vertically over the center of effort or focal point whence
        the earthquake's impulse proceeds, or the vertical line
        connecting these two points.
        [1913 Webster]

From WordNet (r) 2.0 [wn]:

  seismic
       adj : subject to or caused by an earthquake or earth vibration
             [syn: {seismal}]