Microseismograph
Mi`cro`seis´mo`graph
n. | 1. | A microseismometer; specif., a microseismometer producing a graphic record. |
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
n. | 1. | A microseismometer; specif., a microseismometer producing a graphic record. |