Definitions
from The Century Dictionary.
- noun An instrument for measuring and recording very slight earthquake-shocks or earthtremors.
from the GNU version of the Collaborative International Dictionary of English.
- noun A microseismometer; specif., a microseismometer producing a graphic record.
Etymologies
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Examples
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Odenbach of St. Ignatius 'college in Cleveland, O., the noted authority on seismic disturbances, reported that his microseismograph, the most delicate instrument known for detecting the presence of earthquakes in any part of the globe, had plainly recorded the disturbances caused by the eruption of Vesuvius.
Complete Story of the San Francisco Horror Trumbull White 1904
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