n.
Pronunciation: - ˌ graf
Function: noun
Etymology: International Scientific Vocabulary
Date: 1858
: an apparatus to measure and record vibrations within the earth and of the ground
– seis · mog · ra · pher \ s ī z- ' mä-gr ə -f ə r, s ī s- \ noun
– seis · mo · graph · ic \ ˌ s ī z-m ə - ' gra-fik, ˌ s ī s- \ adjective
– seis · mog · ra · phy \ s ī z- ' mä-gr ə -f ē , s ī s- \ noun