seismometern.
/sʌɪzˈmɒmɪtə/ An instrument for measuring the intensity, direction, and duration of earthquakes. All practical seismometers now record their observations automatically, hence the name is used almost interchangeably with seismograph n. and v.
ΚΠ
1841 J. D. Forbes in Edinb. Philos. Trans. (Royal Soc.) 15 i. 220 The self-registering part of the apparatus, which Mr. David Milne has termed a Seismometer.
1886 J. A. Ewing in Encycl. Brit. XXI. 626/2 Seismometer. This name was originally given to instruments designed to measure the movement of the ground during earthquakes.
1886 J. A. Ewing in Encycl. Brit. XXI. 627/1 The term ‘seismometer’ may conveniently be extended (and will here be understood) to cover all instruments which are designed to measure movements of the ground.
This entry has not yet been fully updated (first published 1911; most recently modified version published online December 2019).
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n.1841