Seis-mŏm'e-ter, n.
n. [Gr. σεισμός, a shaking, an earthquake, and μέτρον, measure.] An instrument for measuring the duration and force of an earthquake, and like concussions.
n. [Gr. σεισμός, a shaking, an earthquake, and μέτρον, measure.] An instrument for measuring the duration and force of an earthquake, and like concussions.