accelerograph
noun
ac·cel·ero·graph
-rəˌgraf
plural -s
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
Word History
Etymology
borrowed from French accélérographe, from accéléro- (as in accéléromètre accelerometer + -graphe -graph
First Known Use
1875, in the meaning defined at sense 1