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ac·cel·ero·graph | \ -rəˌgraf \
plural -s
Definition of accelerograph
1 : an apparatus for measuring and recording the pressure developed by combustion of an explosive in a closed space
2 : an instrument for recording the acceleration in velocity of earthquake vibrations
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Merriam-Webster unabridgedWords at Play
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Time Traveler for accelerograph
The first known use of accelerograph was in 1875
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