n.1.A microseismometer; specif., a microseismometer producing a graphic record.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
At the field scale, a microseismograph is commonly used for monitoring the fracture zone affected by the excavation of underground chambers as well as rock burst [31].
Iida (1939): " Observations of earthquakes registered with the microseismograph constructed recently".