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The Collaborative International Dictionary
Seismometry

Seismometry \Seis*mom"e*try\, n. The mensuration of such phenomena of earthquakes as can be expressed in numbers, or by their relation to the co["o]rdinates of space.

Wiktionary
seismometry

n. The numerical or spatial measurement of earthquakes.

Usage examples of "seismometry".

Since then, systematic seismometry in the specified region has been limited to watching for attempted area penetration by unauthorized interlopers.