'Microseismometer' definitions:

Definition of 'Microseismometer'

From: GCIDE

Microseismometer \Mi`cro*seis*mom"e*ter\, n. [Microseism + -meter.] A seismometer for measuring amplitudes or periods, or both, of microseisms. -- {Mi`cro*seis*mom"e*try}, n. [Webster 1913 Suppl.]