seismal

HYPHEN

seis=mal

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WORDNET DICTIONARY

Adjective seismal has 1 sense

seismal(s = adj.all) seismic - subject to or caused by an earthquake or earth vibration;

Derived form noun seism₁

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CIDE DICTIONARY

seismal, 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.