accelerograph

[ ak-sel-er-uh-graf, -grahf ]
/ ækˈsɛl ər əˌgræf, -ˌgrɑf /

noun

an accelerometer containing a pendulum device for measuring and recording ground motions produced by earthquakes.

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decorum

Origin of accelerograph

First recorded in 1905–10; acceler(ation) + -o- + -graph
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020