The Collaborative International Dictionary
Microseismograph
Microseismograph \Mi`cro*seis"mo*graph\, n. [Microseiem + -graph.] A microseismometer; specif., a microseismometer producing a graphic record.
Usage examples of "microseismograph".
He hurried without a word to check the instruments himself, stared for a long time at the readings on the microseismograph trace, and then came slowly back to the desk.
The silent microseismographs quivered faintly, recording the vibrations created by its impact.