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]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

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