Found 1 items, similar to Seismic vertical.
English → English (gcide) Definition: Seismic vertical 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]