n. [ Microseiem + -graph. ] A microseismometer; specif., a microseismometer producing a graphic record. [ Webster 1913 Suppl. ]
n. [ Gr. &unr_;&unr_;&unr_; an earthquake + -graph. ] (Physics) An apparatus for registering the shocks and undulatory motions of earthquakes. [ 1913 Webster ]
a. Of or pertaining to a seismograph; indicated by a seismograph. [ 1913 Webster ]
n.